apps/web/cypress/e2e/cooking-session-page.cy.ts

@@ -230,6 +230,12 @@ describe("Cooking session page", () => {
       .and("contain.text", "Oignon")
       .and("contain.text", "Mutualisé");
 
+    // It sits in one mini section headed with both recipes' names.
+    cy.get(".cooking-phase__recipe-group-title").should(
+      "have.text",
+      "Soupe à l'oignon, Tarte à l'oignon",
+    );
+
     // The next phase's step is not rendered yet.
     cy.contains("Faire mijoter le bouillon").should("not.exist");
 
@@ -321,6 +327,33 @@ describe("Cooking session page", () => {
     cy.contains(".cooking-plan__count", "0 / 3 tâches").should("be.visible");
   });
 
+  it("splits the phase into mini sections by recipe — pooled task first, then each solo preheat under its own recipe", () => {
+    cy.intercept("GET", /\/cooking-session\?/, { statusCode: 200, body: setupPlanFixture() });
+    cy.visit("/cuisiner?date=2026-08-17");
+
+    // Three distinct recipe combinations in this phase's tasks: the pooled
+    // preheat (Soupe + Gratin), then each un-merged preheat solo.
+    const titles = () => cy.get(".cooking-phase__recipe-group-title");
+    titles().should("have.length", 3);
+    titles().eq(0).should("have.text", "Soupe, Gratin");
+    titles().eq(1).should("have.text", "Gratin");
+    titles().eq(2).should("have.text", "Rôti");
+
+    // Each section holds only its own task.
+    cy.get(".cooking-phase__recipe-group")
+      .eq(0)
+      .find(".cooking-task--merged-setup")
+      .should("exist");
+    cy.get(".cooking-phase__recipe-group")
+      .eq(1)
+      .should("contain.text", "Préchauffer le four à 200°C")
+      .and("not.contain.text", "220°C");
+    cy.get(".cooking-phase__recipe-group")
+      .eq(2)
+      .should("contain.text", "Préchauffer le four à 220°C")
+      .and("not.contain.text", "200°C");
+  });
+
   it("shows an error state when the request fails", () => {
     cy.intercept("GET", /\/cooking-session\?/, {
       statusCode: 500,

apps/web/cypress/e2e/cooking-session.feature

@@ -22,6 +22,7 @@ Feature: Start cooking an optimized plan
     And I should see "Mise en place"
     And the pooled prep task should mention "Hacher" and "Oignon"
     And the pooled prep task should be flagged as shared
+    And the pooled prep task should sit in the recipe section "Soupe à l'oignon, Tarte à l'oignon"
 
   Scenario: The stepper walks the phases one at a time
     Given the planning for this week has recipes "Soupe à l'oignon" and "Tarte à l'oignon"
@@ -61,3 +62,4 @@ Feature: Start cooking an optimized plan
     Then I should see the oven conflict note "enchaîner 180 °C puis 210 °C"
     And I should see "Préchauffer le four à 180°C"
     And I should see "Préchauffer le four à 210°C"
+    And I should see the recipe sections "Gratin" and "Rôti"

apps/web/cypress/e2e/cooking-session.ts

@@ -102,6 +102,12 @@ Then("the pooled prep task should be flagged as shared", () => {
   cy.get(".cooking-task--merged-prep").contains("Mutualisé").should("be.visible");
 });
 
+Then("the pooled prep task should sit in the recipe section {string}", (sectionTitle: string) => {
+  cy.contains(".cooking-phase__recipe-group", sectionTitle)
+    .find(".cooking-task--merged-prep")
+    .should("exist");
+});
+
 Given("the cooking plan for {string} has a mise en place then a cooking step", (date: string) => {
   // Two phases so the stepper actually has somewhere to step to: the
   // pooled `chop onion` prep, then a `simmer` cooking step.
@@ -212,6 +218,11 @@ Then("I should see the oven conflict note {string}", (text: string) => {
   cy.get(".cooking-phase__note").should("contain.text", text);
 });
 
+Then("I should see the recipe sections {string} and {string}", (first: string, second: string) => {
+  cy.contains(".cooking-phase__recipe-group-title", first).should("be.visible");
+  cy.contains(".cooking-phase__recipe-group-title", second).should("be.visible");
+});
+
 When("I open the {string} cooking tab", (label: string) => {
   cy.contains(".cooking-session-page__tab", label).click();
 });

apps/web/src/locales/fr/translation.json

@@ -357,7 +357,6 @@
     "task": {
       "mergedPrepLabel": "{{technique}} : {{items}}",
       "mergedSetupLabel": "{{technique}} · {{temperature}}",
-      "forRecipes": "pour {{recipes}}",
       "utensils": "Ustensiles",
       "sharedBadge": "Mutualisé"
     },

apps/web/src/pages/cooking-session/CookingSessionPage.tsx

@@ -14,11 +14,12 @@ import { CheckboxOption } from "../../components/ui/Checkbox";
 import { WeekNavigator } from "../../features/planning/WeekNavigator";
 import { cookingProgress } from "./cooking-progress";
 import {
+  groupTasksByRecipes,
   phaseNoteText,
   phaseProgress,
+  recipeNames,
   reconcileChecked,
   taskHeadline,
-  taskRecipeNames,
 } from "./cooking-session";
 import "./cooking-session-page.scss";
 
@@ -261,7 +262,13 @@ function PlanTab({ plan, weekKey }: { plan: OptimizedCookingPlanView; weekKey: s
   );
 }
 
-/** One phase: its background band (if any) then its tickable task cards. */
+/**
+ * One phase: its notes and background band (if any), then its tickable task
+ * cards split into mini sections — one heading per exact combination of
+ * recipes a task applies to (see {@link groupTasksByRecipes}), so a cook
+ * juggling several recipes at once can jump straight to "what do I do for
+ * Recipe X" instead of scanning one flat list.
+ */
 function PhaseSection({
   phase,
   checked,
@@ -272,6 +279,7 @@ function PhaseSection({
   onToggle: (taskId: string, isChecked: boolean) => void;
 }) {
   const { t } = useTranslation();
+  const groups = groupTasksByRecipes(phase.tasks);
 
   return (
     <section className={`cooking-phase cooking-phase--${phase.kind}`}>
@@ -296,22 +304,32 @@ function PhaseSection({
         </div>
       )}
 
-      <ul className="cooking-phase__tasks">
-        {phase.tasks.map((task) => (
-          <li key={task.id}>
-            <TaskCard
-              task={task}
-              checked={checked.has(task.id)}
-              onToggle={(isChecked) => onToggle(task.id, isChecked)}
-            />
-          </li>
-        ))}
-      </ul>
+      {groups.map((group) => (
+        <div key={group.key} className="cooking-phase__recipe-group">
+          <h3 className="cooking-phase__recipe-group-title">{recipeNames(group.recipes)}</h3>
+          <ul className="cooking-phase__tasks">
+            {group.tasks.map((task) => (
+              <li key={task.id}>
+                <TaskCard
+                  task={task}
+                  checked={checked.has(task.id)}
+                  onToggle={(isChecked) => onToggle(task.id, isChecked)}
+                />
+              </li>
+            ))}
+          </ul>
+        </div>
+      ))}
     </section>
   );
 }
 
-/** A single actionable task — a merged pool (prep or setup) or a plain recipe step — with a tick to mark it done. */
+/**
+ * A single actionable task — a merged pool (prep or setup) or a plain recipe
+ * step — with a tick to mark it done. Which recipe(s) it belongs to is now
+ * shown by the {@link PhaseSection} group heading above it rather than
+ * repeated on every card.
+ */
 function TaskCard({
   task,
   checked,
@@ -337,9 +355,6 @@ function TaskCard({
             <span className="cooking-task__badge">{t("cookingSession.task.sharedBadge")}</span>
           )}
         </span>
-        <span className="cooking-task__recipes">
-          {t("cookingSession.task.forRecipes", { recipes: taskRecipeNames(task) })}
-        </span>
         {task.utensils.length > 0 && (
           <span className="cooking-task__utensils">
             {t("cookingSession.task.utensils")} :{" "}

apps/web/src/pages/cooking-session/cooking-session-page.scss

@@ -336,6 +336,30 @@
     }
   }
 
+  // Mini sections — one per exact combination of recipes a task applies to
+  // (see `groupTasksByRecipes` in cooking-session.ts): a pooled prep/setup
+  // task pools two-plus recipes and gets its own heading, a plain step's
+  // section names just the one recipe it's for. Lets a cook juggling
+  // several recipes at once jump straight to "what do I do for Recipe X"
+  // instead of scanning one flat list.
+  &__recipe-group {
+    display: flex;
+    flex-direction: column;
+    gap: var(--space-xs);
+  }
+
+  &__recipe-group-title {
+    margin: 0;
+    padding-bottom: var(--space-xs);
+    border-bottom: 1px solid var(--color-border);
+    font-family: var(--font-display);
+    font-size: var(--font-size-sm);
+    font-weight: 700;
+    text-transform: uppercase;
+    letter-spacing: 0.03em;
+    color: var(--color-text-muted);
+  }
+
   &__tasks {
     list-style: none;
     margin: 0;
@@ -412,7 +436,6 @@
     letter-spacing: 0.03em;
   }
 
-  &__recipes,
   &__utensils {
     display: block;
     font-size: var(--font-size-sm);

apps/web/src/pages/cooking-session/cooking-session.ts

@@ -1,6 +1,7 @@
 import type {
   CookingPhaseNoteView,
   CookingPhaseView,
+  CookingSessionRecipeRef,
   CookingTaskIngredientView,
   CookingTaskView,
   CookingTemperatureView,
@@ -80,9 +81,67 @@ export function taskHeadline(task: CookingTaskView, t: TranslateFn): string {
   return t("cookingSession.task.mergedPrepLabel", { technique, items });
 }
 
-/** Comma-joined names of the recipes a task belongs to — one for a `step`, several for a pooled `merged-prep`/`merged-setup`. */
-export function taskRecipeNames(task: CookingTaskView): string {
-  return task.sourceRecipes.map((recipe) => recipe.name).join(", ");
+/**
+ * Comma-joined recipe names — one for a `step` task's solo recipe, several
+ * for a pooled `merged-prep`/`merged-setup`'s {@link CookingSessionRecipeRef}
+ * list. Takes the recipe list directly (rather than a whole task) so it
+ * doubles as the heading text for a {@link CookingTaskGroup}, whose
+ * `recipes` is exactly one task's `sourceRecipes` — see
+ * {@link groupTasksByRecipes}.
+ */
+export function recipeNames(recipes: CookingSessionRecipeRef[]): string {
+  return recipes.map((recipe) => recipe.name).join(", ");
+}
+
+/**
+ * One "mini section" of a phase's task list: every task that applies to the
+ * exact same combination of recipes, clustered under one heading (see
+ * {@link groupTasksByRecipes}). `recipes` is that combination, in the same
+ * order every task in `tasks` already carries as its own `sourceRecipes` —
+ * exactly one entry for a `step` task, every recipe it covers for a pooled
+ * `merged-prep`/`merged-setup`.
+ */
+export interface CookingTaskGroup {
+  /**
+   * Sorted `recipeId` list joined with `,` (e.g. `"1,3"`) — uniquely
+   * identifies the combination regardless of `sourceRecipes` order, stable
+   * enough to key a React list.
+   */
+  key: string;
+  recipes: CookingSessionRecipeRef[];
+  tasks: CookingTaskView[];
+}
+
+/**
+ * Splits a phase's tasks into {@link CookingTaskGroup}s so the stepper shows
+ * one mini section per recipe (or per shared pool) instead of one flat list
+ * — a cook juggling several recipes at once can jump straight to "what do I
+ * do for Recipe X" instead of picking it out from everything else in the
+ * phase.
+ *
+ * Grouping is by the *exact* recipe combination, not "shares a recipe with":
+ * a `merged-prep`/`merged-setup` task pools two or more recipes and always
+ * gets its own section, distinct from either recipe's solo-step section
+ * even though they overlap — a task is never split across two sections.
+ *
+ * A group's position is set by the first task that needs it (so e.g. the
+ * mise-en-place phase's pooled prep — always first in `phase.tasks`, see
+ * `cooking-optimizer.ts` — keeps leading as its own section), and a group's
+ * tasks keep their relative order from `tasks` even when another group's
+ * tasks were interleaved between them.
+ */
+export function groupTasksByRecipes(tasks: CookingTaskView[]): CookingTaskGroup[] {
+  const groups = new Map<string, CookingTaskGroup>();
+  for (const task of tasks) {
+    const key = task.sourceRecipes
+      .map((recipe) => recipe.recipeId)
+      .sort((a, b) => a - b)
+      .join(",");
+    const group = groups.get(key);
+    if (group) group.tasks.push(task);
+    else groups.set(key, { key, recipes: task.sourceRecipes, tasks: [task] });
+  }
+  return [...groups.values()];
 }
 
 /**