Important: Safety Warning

This recipe calls for animal brains or related nervous-system tissue. Cattle brain and spinal tissue can transmit bovine spongiform encephalopathy (BSE), the cause of variant Creutzfeldt-Jakob disease in humans, which is fatal and has no treatment.

This information has been left in for historical purposes but should not be acted upon.

No. 1479

Brains a l'Aurora

Cervelles a l'Aurore

Remove the thin skin covering the brains also the fibres. Lay the brains in fresh water for several hours, carefully changing it at invervals, then put them in a saucepan, cover with water, and season with salt, whole pepper, chopped onions, thyme, bay leaf, and a little vinegar. Boil, then let simmer for twenty minutes; drain, and cut each one into twelve equal-sized pieces. Arrange them on a buttered and bread-crumbed dish, cover with an aurora sauce, adding to it for each brain the chopped whites of four hard boiled eggs; and some chopped up parsley. Set the four hard yolks on a sieve, and with a spoon press them through over the brains. Spread some butter on top, and brown in a hot oven.

← No. 1478 Tripe with Cooked Fine Herbs Veal No. 1480 Brains a la Chassaigne →

For the Modern Kitchen Do not make this as written.

Ranhofer's gratin of calf's brains is straightforward once the terms are decoded: a long cold soak, a short poach in an acidulated court-bouillon, then a sauce and a quick browning. The soaking is what determines whether the finished dish looks clean and white or grey and veined.

Sourcing and the BSE questionBrains are not a casual purchase. In the EU and UK, the skull and brain of cattle over twelve months is classed as specified risk material and cannot enter the food chain; in the United States, brain from cattle 30 months and older is likewise prohibited, so in practice only young calves' brains are available, and then usually by special order from a butcher. Prions are not destroyed by ordinary cooking, so this is a sourcing question, not a technique question — buy from a butcher who can tell you the animal's age, or make the dish with lamb's brains where those are sold.
The soak is the recipeSeveral hours in repeatedly changed cold water draws out blood; only then will the thin membrane and its network of fine vessels peel away cleanly. Work under a trickle of cold water with your fingers rather than a knife. Rushed brains stay pink-grey and taste faintly of iron.
"Whole pepper"Peppercorns, not ground; the recipe gives no quantity, and roughly a teaspoon in the poaching liquid is a reasonable modern reading. "A little vinegar" is likewise a poaching seasoning — a couple of tablespoons per quart of water is enough; it firms the exterior and keeps the color pale.
Twenty minutes is correctUnusually for a nineteenth-century timing, this one stands. Brains want a bare simmer for 15 to 20 minutes, never a rolling boil, which breaks them up. Cool them in the liquid if you are not slicing at once, then drain and pat dry so the sauce is not thinned.
Aurora sauceSauce aurore is a veloute or bechamel tinted and flavored with tomato puree — pale salmon-pink, hence the name. Ranhofer gives it separately in the sauce chapter. Aim for a sauce thick enough to coat the pieces but still pourable; enough tomato to color it without thinning it is the guide.
The egg proportionFour hard-boiled eggs per brain is a great deal by modern eye, and the whites folded into the sauce are as much a textural bulking agent as a flavor. Two eggs per brain gives a lighter dish; keep the yolk sieved over the top either way, since that golden dusting is the point of the presentation.
"Brown in a hot oven"Ranhofer gives no temperature; a modern equivalent for a hot oven is somewhere around 425–450°F, but the dish is already cooked through and only needs color. A few minutes under the broiler does the job better and will not dry the sauce into a skin. Watch it — the sieved yolk scorches before the sauce does.
YieldOne calf's brain, cut into twelve, serves two as a first course. The gratin dish should be shallow and just large enough to hold the pieces in a single layer.

A Little History

The Epicurean (1894) is Charles Ranhofer's record of thirty-odd years as chef at Delmonico's in New York, and its veal chapter carries a run of brain preparations — a l'Aurore, a la Chassaigne, and others — that reflects how unremarkable offal was on an ambitious American menu of the period. Sauce aurore takes its name from the dawn: a white sauce blushed with tomato, one of the small family of tinted derivative sauces codified in French professional kitchens through the nineteenth century, and here it does double duty by giving the pale brains a color they cannot supply themselves. The sieved yolk scattered over the top completes the sunrise conceit. Brains fell out of American restaurant cooking long before BSE regulation arrived in the 1990s and 2000s, but the regulation is why a dish that Ranhofer could assume any market would supply now requires a conversation with a butcher.