Flan / Crema Catalana Custard (Egg to Milk to Sugar)

3 large (about 150 g)

Whole eggs (firm flan) — Egg whites tighten the set; more whole eggs = firmer, more rubbery texture

6 yolks (about 108 g)

Egg yolks (soft version) — Yolk-only custards are richer, more tender, and more orange; Filipino leche flan uses 12–14 yolks per 400 ml condensed + evaporated milk

500 ml

Whole milk — Substitute half or all with heavy cream for a richer, denser custard; evaporated milk (common in Latin America) gives a more cooked-milk flavor and firmer set

100 g (in custard)

Granulated sugar — Slight increase to 120 g for Latin American styles; vanilla, cinnamon, or citrus zest steeped in hot milk before straining

100–150 g

Sugar for caramel (optional) — Dry-caramel poured into ramekins before the custard; melts to sauce when inverted

Bring milk and aromatics to just below a simmer; steep 10 minutes. Whisk eggs (or yolks) with sugar until combined but not foamy. Pour hot milk over egg mixture in a slow stream, whisking gently. Strain through a fine-mesh sieve to remove chalazae and any cooked bits. Skim foam. Pour into caramel-lined ramekins. Bake in a bain-marie at 150–160 °C (300–320 °F) until edges are set but the center wobbles like just-set gelatin — about 30–40 minutes for 150 ml ramekins. Chill at least 4 hours before unmolding.

• Mix eggs gently — vigorous whisking incorporates air bubbles that become surface pockmarks in the baked custard. If foam forms, skim it or let it settle 10 minutes before pouring.
• The bain-marie is non-negotiable: direct oven heat causes the edges to overcook and rubbery curds to form before the center sets. The water bath keeps oven temperature effectively at 100 °C at the custard surface.
• A fully set flan will wobble uniformly in the center like gelatin, not ripple like liquid. Insert a thin knife 1 cm from the edge — it should come out clean.
• Bake at low temperature (150–160 °C). Higher temperatures cause the egg proteins to contract, squeezing out whey and creating a pocked, 'weeping' custard.
• Resting overnight in the refrigerator before unmolding deepens the caramel flavor and firms the set — a 4-hour minimum, 12 hours ideal.
• For crema catalana, use cornstarch (1 tsp per 250 ml milk) to prevent curdling on the stovetop and to make the cream spreadable under the brûlée torch.

• Leche flan (Philippines)

  12–14 yolks to 400 ml evaporated + 400 ml condensed milk; steamed (not baked) in oval llanera molds; extremely rich and firm

• Purin (Japan)

  Lighter, more delicate: 3 eggs to 500 ml milk, less sugar; often steamed or baked at very low temperature for a silkier, pore-free texture

• Crème caramel (France)

  Classic yolk-biased: 3 whole eggs + 3 yolks to 500 ml milk + 100 ml cream; elegant, barely-firm set

• Crema catalana (Catalonia)

  Stovetop: 8 yolks to 1 L whole milk, cornstarch optional (25 g), infused with lemon + cinnamon; finished with burnt sugar crust, never baked

• Quesillo (Venezuela)

  1 can condensed milk + 6 eggs; extremely sweet and dense; caramel line is very dark

• Tocino del cielo (Andalusia)

  Egg-yolk-heavy: 12–14 yolks + 2 whole eggs to 300 g sugar syrup; no milk — exceptionally dense and sweet

• Crème Brûlée (Cream to Egg Yolk)

  All-cream, yolk-heavy custard — richer, softer, fired with a torch rather than unmolded

• Crème Pâtissière (Milk to Egg Yolk to Sugar to Starch)

  Adds cornstarch for a thick, pipeable result versus the poured, oven-set flan

• Steamed Egg Custard (Water to Egg)

  Savory parallel in East Asian cuisines — same bain-marie principle, no sugar, served in the steaming vessel

1. 1.The Professional Pastry Chef — Bo Friberg (4th ed.)
2. 2.On Food and Cooking — Harold McGee
3. 3.The Spanish Table — Marimar Torres
4. 4.Bouchon Bakery — Thomas Keller & Sebastien Rouxel

Confidence: high