Custards, creams & meringues
Quiche Custard / Royale
Crème à quiche · A poured egg-and-cream custard used to fill blind-baked tart shells before baking. The benchmark of egg‑coagulation cookery: enough egg protein to set firmly, enough cream fat to stay tender and lush. Royale denotes the same preparation baked in individual ramekins as a first course.
The formula
1 egg + 1 yolk : 125 ml cream
For one 23–25 cm tart: 3 eggs + 3 yolks (≈330 g total) whisked with 400 ml cream (≈412 g), seasoned with ~3 g salt and a pinch of nutmeg. Volume ratio egg : cream ≈ 1 : 1. For a lighter set: 3 eggs only, 500 ml cream. For richer royale in ramekins: add 1 extra yolk per portion.
Identity
- Full egg (white + yolk) provides structure; yolks add richness and emulsification that prevents weeping
- Cream dilutes protein concentration, delaying coagulation and keeping the set tender rather than rubbery
- Gentle heat (bain‑marie, 160–170 °C oven) allows proteins to set uniformly without over‑cooking edges
- Seasoning bridges the mild egg and sweet cream into a coherent savory filling
- Custard is poured over pre‑cooked, drained fillings into a blind‑baked shell — never raw proteins
Ingredients
| Binder | Whole eggs | Whole egg supplies structure and moisture; white adds firmness, yolk adds richness and emulsifier lecithin. |
| Binder | Egg yolks | Yolks enrich flavor, raise the fat content, and prevent graininess by emulsifying fat droplets into the protein matrix. 1 yolk per egg is the classical ratio. |
| Liquid | Heavy cream (35% fat) | Fat dilutes protein concentration, delaying coagulation. Lower‑fat cream yields a tighter, less tender set. Must be well‑chilled for consistent incorporation. |
| Seasoning | Fine sea salt | ~3–4 g per 700 ml custard. Salt seasons the egg itself (which is bland without it) and amplifies richness. |
| Flavor | White pepper | A small pinch — barely perceptible but bridges the egg and cream. Black pepper is acceptable; white is preferred for its invisible heat. |
| Flavor | Freshly grated nutmeg | Traditional in Lorraine‑style. A whisper — ¼ tsp for the full batch. Enhance, never dominate. |
Method
- 1Combine eggs, yolks, cream, salt, and pepper in a bowl. Whisk vigorously until fully homogenized — the mixture should be uniform, not streaky.A uniform emulsion ensures even protein distribution and consistent set. Uneven mixing produces streaky, patchy custard.
- 2Strain through a fine‑mesh sieve into a pitcher.Straining removes chalazae (egg white ligaments) and any shell fragments that would create grainy specks in the finished custard.
- 3Pre‑cook and thoroughly drain any savory fillings (lardons, caramelized onions, sautéed leeks). Spread evenly in the blind‑baked tart shell. Pour strained custard to within 3 mm of the rim.Pre‑cooking removes moisture that would otherwise weep into the custard. Proper fill level allows for safe transport and even rising during baking.
- 4Bake in a bain‑marie (tart pan set in a larger roasting pan; boiling water halfway up the sides) at 160–170 °C (325–340 °F) for 30–40 minutes for a 23 cm tart, or 20–25 minutes for ramekins.Bain‑marie moderates oven heat, preventing the bottom from over‑cooking before the centre sets. Direct heat causes edges to puff and curdle while the middle remains liquid.
- 5Remove when the centre still has a definite liquid wobble (internally 68–72 °C). The edges will be firmly set; the inner 5 cm should tremble like set gelatin.Carry‑over heat continues cooking the centre after removal. An over‑baked quiche weeps and becomes rubbery; a correctly pulled quiche finishes setting off‑heat.
Techniques that matter
Bain‑marie (water bath) baking
Water is an effective heat buffer that prevents the custard from exceeding 100 °C at the base, where it would over‑coagulate before the surface sets. This is the single most critical technique for clean slicing.
Straining the custard
Removes chalazae and any coagulated egg particles that would mar the silky, smooth face of the finished quiche.
Pre‑cooking and draining fillings
Raw fillings (especially bacon fat, onions, or greens) introduce excess moisture that dilutes the custard ratio, weakens the set, and causes weeping.
Egg‑fat emulsion control
Egg yolk lecithin emulsifies cream fat into the protein network, creating a stable, creamy matrix. Over‑mixing after adding fat can break this emulsion; gentle folding of cold cream into egg is sufficient.
Variations & derivatives
Quiche LorraineLorraine, France
The canonical reference. Smoked or unsmoked lardons (pre‑cooked until rendered), no cheese, no herbs. Plain custard poured over lardons in blind‑baked pâte brisée. Any deviation is not Lorraine.
Flamiche aux PoireauxPicardy, France
Similar custard base on a shortercrust; the defining feature is the filling — sliced leeks braised in butter until silky‑sweet, no lardons. Lighter, more vegetal character.
Tarte Flambée (Flammekueche)Alsace, France
Thin pizza‑like base with crème fraîche thinned to pourable consistency (≈35% fat cream substitute), lardons, and raw onions. Much thinner custard layer; baked at very high heat (300–350 °C) for 5–8 minutes.
Crème RoyaleClassical French cuisine
The same egg‑cream ratio baked in individual earthenware ramekins as a refined first course. Often flavored with chicken stock reduction, fouetté cream, or fines herbes. Demands a firmer set than a tart filling.
Quiche aux Poireaux / FromageFrance (universal)
Braising the leeks first, then adding cheese (Gruyère or Comté) directly to the shell before pouring custard. Cheese adds protein and fat that intensifies browning on the surface.
Used in these dishes
Substitutions
- Heavy cream (35% fat) → Half‑and‑half (10–12% fat) — Reduces richness and tenderizing fat; custard sets more firmly and can become rubbery. Acceptable in emergency only.changes result
- Heavy cream → Crème fraîche — Higher fat, more tang. Excellent substitute — adds complexity and slightly better resistance to over‑baking. Thin with 1–2 tbsp milk if needed for pourability.
- Eggs + yolks → Whole eggs only (no extra yolks) — Removes emulsifier and fat; custard is leaner, sets faster, and can develop a more rubbery texture. Use 4 whole eggs in place of 3 eggs + 3 yolks.changes result
Troubleshooting
Custard weeps clear liquid onto the cutting board after slicing
Under‑baked — the protein matrix never fully coalesced; or too much liquid in the filling (under‑drained onions, bacon fat) dilutes the ratio → Bake to an internal temperature of 68–72 °C with a thermometer; thoroughly drain and pat dry all savory fillings before adding them to the shell
Surface cracks and interior is rubbery and dense
Oven temperature too high (>180 °C) or custard left in oven past the point of set; the protein network tightens and squeezes out moisture → Always bake in a bain‑marie at 160–170 °C; use an oven thermometer to verify temperature; pull the quiche while the centre still wobbles firmly
Bitter or tinny flavor despite correct proportions
Aluminum tart pan in direct contact with custard — trace metal leaches into the egg protein during baking; or too much black pepper for the dish → Use enamel‑coated, stainless‑steel, or carbon‑steel tart pans; season accurately with salt (not bicarbonate of soda or any alkaline leavener, which causes discoloration)