diff --git a/apps/api/src/sources/index.ts b/apps/api/src/sources/index.ts
index 2348cfd..7148b59 100644
--- a/apps/api/src/sources/index.ts
+++ b/apps/api/src/sources/index.ts
@@ -1,12 +1,12 @@
 import { registerRecipeSource } from "../lib/recipe-sources/recipe-source-registry.js";
+import { marmitonAdapter } from "./marmiton.js";
 import { theMealDbAdapter } from "./the-meal-db.js";
 
 /**
  * Registers every concrete, *browsable* `RecipeSourceAdapter` this app
- * ships with into the shared in-memory registry
- * (`recipe-source-registry.ts`) — currently just `theMealDbAdapter`.
- * Called once, explicitly, by the two real entry points that need the
- * registry populated:
+ * ships with into the shared in-memory registry (`recipe-source-registry.ts`)
+ * — `theMealDbAdapter` and `marmitonAdapter`. Called once, explicitly, by
+ * the two real entry points that need the registry populated:
  *
  * - `server.ts` — the running API process, before it starts listening.
  * - `prisma/seed.ts` — so `syncRecipeSources` has something to mirror into
@@ -21,15 +21,17 @@ import { theMealDbAdapter } from "./the-meal-db.js";
  * explicit setup. Tests that need a source in the registry register their
  * own throwaway fake instead (see e.g. `test/recipe-source-sync.test.ts`).
  *
- * `jsonLdRecipeAdapter` (json-ld-recipe.ts) is deliberately **not**
+ * `jsonLdRecipeAdapter` (json-ld-recipe.ts) itself is deliberately **not**
  * registered here — it's a generic schema.org-JSON-LD parser meant to be
- * specialized per scraped website (a concrete adapter for a specific site
- * would use it internally), not a household-toggleable `Source` in its own
- * right: nobody can meaningfully "trust" or "enable" a generic parsing
- * mechanism the way they can a named website. Until real per-site adapters
- * exist, it's called directly (e.g. a future "import from a pasted URL"
- * flow), never through this registry.
+ * specialized per scraped website, not a household-toggleable `Source` in
+ * its own right: nobody can meaningfully "trust" or "enable" a generic
+ * parsing mechanism the way they can a named website. `marmitonAdapter`
+ * (marmiton.ts) is exactly that specialization for marmiton.org — the
+ * first concrete adapter built on top of it, per its own doc comment's
+ * anticipation ("a concrete adapter for a specific site would use it
+ * internally").
  */
 export function registerAllRecipeSources(): void {
   registerRecipeSource(theMealDbAdapter);
+  registerRecipeSource(marmitonAdapter);
 }
diff --git a/apps/api/src/sources/json-ld-recipe.ts b/apps/api/src/sources/json-ld-recipe.ts
index 9ef4ce7..bc24d38 100644
--- a/apps/api/src/sources/json-ld-recipe.ts
+++ b/apps/api/src/sources/json-ld-recipe.ts
@@ -44,8 +44,17 @@ interface SchemaOrgRecipe {
   url?: string;
 }
 
-/** Extracts and JSON-parses every JSON-LD block on the page — a block that fails to parse is skipped rather than failing the whole page over one malformed script tag (some sites ship more than one JSON-LD block, e.g. `BreadcrumbList` alongside `Recipe`). */
-function extractJsonLdBlocks(html: string): unknown[] {
+/**
+ * Extracts and JSON-parses every JSON-LD block on the page — a block that
+ * fails to parse is skipped rather than failing the whole page over one
+ * malformed script tag (some sites ship more than one JSON-LD block, e.g.
+ * `BreadcrumbList` alongside `Recipe`). Exported (not just consumed
+ * internally by {@link findRecipeNode} below) so a concrete per-site adapter
+ * built on top of this module — e.g. `marmiton.ts`, which needs the same
+ * page's embedded `ItemList` rather than its `Recipe` — reuses this same
+ * extraction step instead of re-implementing the `<script>`-block regex.
+ */
+export function extractJsonLdBlocks(html: string): unknown[] {
   const blocks: unknown[] = [];
   for (const match of html.matchAll(JSON_LD_SCRIPT_PATTERN)) {
     try {
@@ -167,6 +176,13 @@ function flattenInstructions(instructions: SchemaOrgRecipe["recipeInstructions"]
  * `fetchDetail`'s `externalId` is simply the target URL itself, not an id
  * from a prior `list()` call. A future "import from URL" flow would call
  * `fetchDetail(pastedUrl)` directly.
+ *
+ * `marmiton.ts`'s `marmitonAdapter` is the first concrete adapter built on
+ * top of this one — its `fetchDetail`/`parse` delegate straight here (a
+ * marmiton.org recipe page's JSON-LD is a plain schema.org `Recipe`, nothing
+ * site-specific to handle), and it only adds the `list()` this adapter
+ * itself can't offer, by reading the separate `ItemList` marmiton.org embeds
+ * on its search-results pages.
  */
 export const jsonLdRecipeAdapter: RecipeSourceAdapter<{
   html: string;
diff --git a/apps/api/src/sources/marmiton.ts b/apps/api/src/sources/marmiton.ts
new file mode 100644
index 0000000..57f72fe
--- /dev/null
+++ b/apps/api/src/sources/marmiton.ts
@@ -0,0 +1,206 @@
+import type {
+  ParsedRecipe,
+  RecipeSourceAdapter,
+  RecipeSourceListItem,
+  RecipeSourceListParams,
+  RecipeSourceListResult,
+} from "../lib/recipe-sources/recipe-source-adapter.js";
+import {
+  RecipeSourceFetchError,
+  RecipeSourceParseError,
+} from "../lib/recipe-sources/recipe-source-errors.js";
+import { extractJsonLdBlocks, jsonLdRecipeAdapter } from "./json-ld-recipe.js";
+
+const SOURCE_KEY = "marmiton";
+const SEARCH_URL = "https://www.marmiton.org/recettes/recherche.aspx";
+
+/**
+ * One `ListItem` inside the schema.org `ItemList` marmiton.org embeds as
+ * JSON-LD on its search-results pages — the subset this adapter reads. Also
+ * what a search whose term happens to match a known ingredient (e.g.
+ * `aqt=poulet`) actually returns: marmiton.org silently serves its
+ * ingredient-index page instead of a "search results" page for those terms,
+ * but that page embeds the exact same `ItemList` shape, so `list()` doesn't
+ * need to tell the two apart.
+ */
+interface MarmitonListItem {
+  "@type"?: string;
+  url?: string;
+  name?: string;
+  image?: string;
+}
+
+/** The subset of a schema.org `ItemList` this adapter reads off marmiton.org's search-results page. */
+interface MarmitonItemList {
+  "@type"?: string;
+  "@graph"?: unknown[];
+  itemListElement?: MarmitonListItem[];
+}
+
+/**
+ * Finds the first `ItemList` node within one parsed JSON-LD block — mirrors
+ * `findRecipeNode`'s traversal in json-ld-recipe.ts (array of mixed-type
+ * nodes, `@graph` wrapper) but looks for the results listing marmiton.org's
+ * search page embeds instead of a `Recipe`.
+ */
+function findItemListNode(node: unknown): MarmitonItemList | null {
+  if (node === null || typeof node !== "object") return null;
+  if (Array.isArray(node)) {
+    for (const item of node) {
+      const found = findItemListNode(item);
+      if (found) return found;
+    }
+    return null;
+  }
+  const obj = node as MarmitonItemList;
+  if (obj["@type"] === "ItemList") return obj;
+  if (Array.isArray(obj["@graph"])) return findItemListNode(obj["@graph"]);
+  return null;
+}
+
+/**
+ * Re-labels a `RecipeSourceFetchError`/`RecipeSourceParseError` thrown by
+ * the generic `jsonLdRecipeAdapter` (`sourceKey` `"jsonLdRecipe"`) as having
+ * come from this adapter instead (`sourceKey` `"marmiton"`). `fetchDetail`/
+ * `parse` below are thin wrappers around the generic adapter's own methods
+ * (see this module's doc comment) — but a caller catching `RecipeSourceError`
+ * and reading `.sourceKey` to attribute a failure to a specific `Source`
+ * should see "marmiton", the source it actually asked about, not the
+ * internal implementation detail this adapter happens to be built on.
+ * Anything else (a bug, an unexpected throw) is passed through unchanged —
+ * only the vocabulary this module documents gets relabeled.
+ */
+function rekeySourceError(err: unknown): unknown {
+  if (err instanceof RecipeSourceFetchError) {
+    return new RecipeSourceFetchError(SOURCE_KEY, err.message, { cause: err.cause });
+  }
+  if (err instanceof RecipeSourceParseError) {
+    return new RecipeSourceParseError(SOURCE_KEY, err.message, { cause: err.cause });
+  }
+  return err;
+}
+
+/**
+ * marmiton.org — France's largest recipe site. Unofficial (`official:
+ * false`): there's no published API, this adapter fetches ordinary pages and
+ * reads the schema.org structured data marmiton.org embeds for search
+ * engines, same as {@link jsonLdRecipeAdapter} it's built on. It's the first
+ * concrete, per-site adapter that generic adapter's own doc comment
+ * anticipated ("a concrete adapter for a specific site would use it
+ * internally") — `fetchDetail`/`parse` below just delegate straight to it,
+ * since a marmiton.org recipe page's JSON-LD is a plain schema.org `Recipe`
+ * with nothing site-specific to handle. The only real Marmiton-specific
+ * logic is `list()`: `jsonLdRecipeAdapter` has no catalog of its own to
+ * browse, but marmiton.org's search-results page embeds a browsable
+ * `ItemList` this adapter reads directly (see {@link findItemListNode}).
+ */
+export const marmitonAdapter: RecipeSourceAdapter<{ html: string; url: string }> = {
+  key: SOURCE_KEY,
+  name: "Marmiton",
+  official: false,
+  // Un chemin stable (jamais un nom de fichier avec un hash de build, comme
+  // les icônes servies depuis statics.marmiton.fr) — marmiton.org sert son
+  // favicon à cette adresse indépendamment de tout déploiement.
+  iconUrl: "https://www.marmiton.org/favicon.ico",
+  // Le contenu de Marmiton (noms, ingrédients, instructions) est en
+  // français — détermine contre quel modèle/locale d'étiquettes
+  // d'ingrédients translateRecipe (recipe-translation.ts) résout les
+  // recettes de cette source lors d'une prévisualisation/d'un import.
+  locale: "fr",
+
+  async list(params: RecipeSourceListParams): Promise<RecipeSourceListResult> {
+    try {
+      // Un curseur opaque qui encode simplement le numéro de page suivant —
+      // marmiton.org pagine sa recherche via `&page=N` (page 1 implicite
+      // quand le paramètre est absent), pas de token dédié à faire
+      // transiter.
+      const page = params.cursor ? Number(params.cursor) : 1;
+      const query = params.query ?? "";
+      const searchUrl = `${SEARCH_URL}?aqt=${encodeURIComponent(query)}${
+        page > 1 ? `&page=${page}` : ""
+      }`;
+
+      let response: Response;
+      try {
+        response = await fetch(searchUrl);
+      } catch (cause) {
+        throw new RecipeSourceFetchError(
+          SOURCE_KEY,
+          `Network error searching Marmiton (${searchUrl})`,
+          { cause },
+        );
+      }
+      // marmiton.org répond 404 dès que `page` dépasse la dernière page de
+      // résultats pour cette recherche — pas un vrai échec, juste "il n'y a
+      // plus rien" : son `ItemList` ne porte aucun total fiable (son
+      // `numberOfItems` vaut toujours la taille de la page courante, jamais
+      // le nombre total de résultats) pour le détecter à l'avance autrement
+      // qu'en demandant la page suivante et en constatant qu'elle est vide.
+      if (response.status === 404) {
+        return { items: [], nextCursor: null };
+      }
+      if (!response.ok) {
+        throw new RecipeSourceFetchError(
+          SOURCE_KEY,
+          `Marmiton search responded ${response.status} (${searchUrl})`,
+        );
+      }
+      const html = await response.text();
+
+      let itemList: MarmitonItemList | null = null;
+      for (const block of extractJsonLdBlocks(html)) {
+        itemList = findItemListNode(block);
+        if (itemList) break;
+      }
+
+      const items: RecipeSourceListItem[] = (itemList?.itemListElement ?? [])
+        .filter((entry): entry is MarmitonListItem & { url: string; name: string } =>
+          Boolean(entry.url && entry.name),
+        )
+        .map((entry) => ({
+          externalId: entry.url,
+          title: entry.name,
+          picture: entry.image ?? null,
+          url: entry.url,
+        }));
+
+      return {
+        items,
+        // Voir le commentaire ci-dessus sur la réponse 404 : une page vide
+        // est elle-même le signal de fin, donc on ne propose une page
+        // suivante que si celle-ci en a retourné au moins un résultat.
+        nextCursor: items.length > 0 ? String(page + 1) : null,
+      };
+    } catch (err) {
+      // Rethrown as-is (already keyed "marmiton" by whichever branch above
+      // threw it) — this adapter's only caller (`sources.service.ts`)
+      // already handles/logs failures centrally; this method just isn't
+      // allowed a bare `async` body without a try/catch per the repo's
+      // convention. Same reasoning as `json-ld-recipe.ts`/`the-meal-db.ts`.
+      throw err;
+    }
+  },
+
+  // `externalId` est directement l'URL canonique de la recette sur
+  // marmiton.org (renvoyée telle quelle par `list()` ci-dessus) — même
+  // convention que `jsonLdRecipeAdapter.fetchDetail`, à qui cette méthode
+  // délègue entièrement (voir le commentaire du module).
+  async fetchDetail(externalId: string): Promise<{ html: string; url: string }> {
+    try {
+      return await jsonLdRecipeAdapter.fetchDetail(externalId);
+    } catch (err) {
+      // Pas un simple re-throw : `rekeySourceError` est le traitement utile
+      // que ce point d'appel doit faire de l'erreur (relabelliser sa
+      // `sourceKey`), conformément à la convention await/try-catch du repo.
+      throw rekeySourceError(err);
+    }
+  },
+
+  parse(raw: { html: string; url: string }): ParsedRecipe {
+    try {
+      return jsonLdRecipeAdapter.parse(raw);
+    } catch (err) {
+      throw rekeySourceError(err);
+    }
+  },
+};
diff --git a/apps/api/test/recipe-sources/marmiton.test.ts b/apps/api/test/recipe-sources/marmiton.test.ts
new file mode 100644
index 0000000..21f870c
--- /dev/null
+++ b/apps/api/test/recipe-sources/marmiton.test.ts
@@ -0,0 +1,226 @@
+import { expect } from "chai";
+import {
+  RecipeSourceFetchError,
+  RecipeSourceParseError,
+} from "../../src/lib/recipe-sources/recipe-source-errors.js";
+import { marmitonAdapter } from "../../src/sources/marmiton.js";
+
+/** Stubs `globalThis.fetch` to return `html` as the response body — same pattern as `json-ld-recipe.test.ts`'s `stubFetchHtml`. */
+function stubFetchHtml(html: string, status = 200) {
+  globalThis.fetch = (async () => new Response(html, { status })) as typeof fetch;
+}
+
+/**
+ * Wraps a schema.org `ItemList` payload (already an object, not yet
+ * stringified) in a minimal HTML page carrying it as one
+ * `<script type="application/ld+json">` block — the shape marmiton.org's
+ * search-results page embeds `list()` reads.
+ */
+function htmlWithItemListJsonLd(itemListElement: unknown[]): string {
+  const payload = {
+    "@context": "https://schema.org",
+    "@graph": [
+      { "@type": "WebSite", name: "Marmiton" },
+      {
+        "@type": "ItemList",
+        "@id": "https://www.marmiton.org/recettes/recherche.aspx?aqt=poulet#itemlist",
+        numberOfItems: itemListElement.length,
+        itemListElement,
+      },
+    ],
+  };
+  return `<!doctype html><html><head><script type="application/ld+json">${JSON.stringify(
+    payload,
+  )}</script></head><body></body></html>`;
+}
+
+const RECIPE_URL = "https://www.marmiton.org/recettes/recette_tarte-aux-pommes_11457.aspx";
+
+const baseListItem = {
+  "@type": "ListItem",
+  position: 1,
+  url: RECIPE_URL,
+  name: "Tarte aux pommes",
+  image: "https://assets.afcdn.com/recipe/tarte.jpg",
+};
+
+const baseRecipeJsonLd = {
+  "@context": "https://schema.org",
+  "@type": "Recipe",
+  name: "Tarte aux pommes",
+  description: "Une tarte aux pommes classique.",
+  image: "https://assets.afcdn.com/recipe/tarte.jpg",
+  recipeYield: "6 personnes",
+  recipeIngredient: ["3 pommes", "1 pâte brisée"],
+  recipeInstructions: [
+    { "@type": "HowToStep", text: "Épluchez les pommes." },
+    { "@type": "HowToStep", text: "Enfournez 30 minutes." },
+  ],
+};
+
+function htmlWithRecipeJsonLd(): string {
+  return `<!doctype html><html><head><script type="application/ld+json">${JSON.stringify(
+    baseRecipeJsonLd,
+  )}</script></head><body></body></html>`;
+}
+
+describe("marmitonAdapter", () => {
+  let originalFetch: typeof fetch;
+
+  beforeEach(() => {
+    originalFetch = globalThis.fetch;
+  });
+
+  afterEach(() => {
+    globalThis.fetch = originalFetch;
+  });
+
+  it("declares itself as an unofficial, French-locale source with an icon", () => {
+    expect(marmitonAdapter.key).to.equal("marmiton");
+    expect(marmitonAdapter.name).to.equal("Marmiton");
+    expect(marmitonAdapter.official).to.equal(false);
+    expect(marmitonAdapter.iconUrl).to.be.a("string");
+    expect(marmitonAdapter.locale).to.equal("fr");
+  });
+
+  describe("list", () => {
+    it("maps the search page's ItemList into RecipeSourceListItems and offers a next page", async () => {
+      stubFetchHtml(htmlWithItemListJsonLd([baseListItem]));
+
+      const result = await marmitonAdapter.list({ query: "tarte aux pommes" });
+
+      expect(result.items).to.deep.equal([
+        {
+          externalId: RECIPE_URL,
+          title: "Tarte aux pommes",
+          picture: "https://assets.afcdn.com/recipe/tarte.jpg",
+          url: RECIPE_URL,
+        },
+      ]);
+      expect(result.nextCursor).to.equal("2");
+    });
+
+    it("requests the given cursor's page and stops offering a next page once a page comes back empty", async () => {
+      let requestedUrl: string | undefined;
+      globalThis.fetch = (async (url: string) => {
+        requestedUrl = url;
+        return new Response(htmlWithItemListJsonLd([]), { status: 200 });
+      }) as typeof fetch;
+
+      const result = await marmitonAdapter.list({ query: "tarte", cursor: "3" });
+
+      expect(requestedUrl).to.include("page=3");
+      expect(result.items).to.deep.equal([]);
+      expect(result.nextCursor).to.be.null;
+    });
+
+    it("treats a 404 (page past the last one) as an empty final page, not a failure", async () => {
+      stubFetchHtml("", 404);
+
+      const result = await marmitonAdapter.list({ query: "tarte", cursor: "999" });
+
+      expect(result.items).to.deep.equal([]);
+      expect(result.nextCursor).to.be.null;
+    });
+
+    it("skips a ListItem missing a url or a name", async () => {
+      stubFetchHtml(
+        htmlWithItemListJsonLd([
+          { "@type": "ListItem", position: 1, name: "No url" },
+          { "@type": "ListItem", position: 2, url: RECIPE_URL },
+        ]),
+      );
+
+      const result = await marmitonAdapter.list({ query: "x" });
+
+      expect(result.items).to.deep.equal([]);
+    });
+
+    it("returns an empty page rather than throwing when the page has no ItemList at all", async () => {
+      stubFetchHtml("<!doctype html><html><body>Rien ici</body></html>");
+
+      const result = await marmitonAdapter.list({ query: "x" });
+
+      expect(result.items).to.deep.equal([]);
+      expect(result.nextCursor).to.be.null;
+    });
+
+    it("throws RecipeSourceFetchError on a non-2xx, non-404 response", async () => {
+      stubFetchHtml("", 500);
+
+      try {
+        await marmitonAdapter.list({ query: "x" });
+        expect.fail("expected list to throw");
+      } catch (err) {
+        expect(err).to.be.instanceOf(RecipeSourceFetchError);
+      }
+    });
+
+    it("throws RecipeSourceFetchError when the network request itself fails", async () => {
+      globalThis.fetch = (async () => {
+        throw new Error("network down");
+      }) as typeof fetch;
+
+      try {
+        await marmitonAdapter.list({ query: "x" });
+        expect.fail("expected list to throw");
+      } catch (err) {
+        expect(err).to.be.instanceOf(RecipeSourceFetchError);
+        expect((err as RecipeSourceFetchError).cause).to.be.instanceOf(Error);
+      }
+    });
+  });
+
+  describe("fetchDetail", () => {
+    it("fetches the given recipe URL and returns its html alongside the url", async () => {
+      stubFetchHtml(htmlWithRecipeJsonLd());
+
+      const result = await marmitonAdapter.fetchDetail(RECIPE_URL);
+
+      expect(result.url).to.equal(RECIPE_URL);
+      expect(result.html).to.include("Tarte aux pommes");
+    });
+
+    it("throws a RecipeSourceFetchError keyed to marmiton, not the underlying generic adapter", async () => {
+      stubFetchHtml("", 404);
+
+      try {
+        await marmitonAdapter.fetchDetail(RECIPE_URL);
+        expect.fail("expected fetchDetail to throw");
+      } catch (err) {
+        expect(err).to.be.instanceOf(RecipeSourceFetchError);
+        expect((err as RecipeSourceFetchError).sourceKey).to.equal("marmiton");
+      }
+    });
+  });
+
+  describe("parse", () => {
+    it("delegates to the generic JSON-LD parser end to end", () => {
+      const parsed = marmitonAdapter.parse({ html: htmlWithRecipeJsonLd(), url: RECIPE_URL });
+
+      expect(parsed.name).to.equal("Tarte aux pommes");
+      expect(parsed.portions).to.equal(6);
+      expect(parsed.sourceUrl).to.equal(RECIPE_URL);
+      expect(parsed.ingredients).to.deep.equal([
+        { rawText: "3 pommes", quantity: null, unit: null, name: "3 pommes" },
+        { rawText: "1 pâte brisée", quantity: null, unit: null, name: "1 pâte brisée" },
+      ]);
+      expect(parsed.steps).to.deep.equal([
+        { description: "Épluchez les pommes.", picture: null },
+        { description: "Enfournez 30 minutes.", picture: null },
+      ]);
+    });
+
+    it("throws a RecipeSourceParseError keyed to marmiton, not the underlying generic adapter", () => {
+      const html = "<!doctype html><html><body>Pas de JSON-LD ici</body></html>";
+
+      try {
+        marmitonAdapter.parse({ html, url: RECIPE_URL });
+        expect.fail("expected parse to throw");
+      } catch (err) {
+        expect(err).to.be.instanceOf(RecipeSourceParseError);
+        expect((err as RecipeSourceParseError).sourceKey).to.equal("marmiton");
+      }
+    });
+  });
+});