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Baked Vanilla Custard
3 cups milk 5 eggs cup sugar 1/4 teaspoon salt teaspoon vanilla Scald milk and add to eggs, sugar and salt, mixed together. Strain, add vanilla, and bake in one large buttered mould, or small ones, set in a pan of hot water, in a slow oven.
Should the water boil during baking, the custard will be of a porous consistency. To test the custard thrust a silver knife through the center. When it comes out clean the custard is done.
A plain baked custard, and the whole of its difficulty lies in heat control. The original text has lost some of its fractions in transcription, so read the quantities with care.
- The missing fractions"cup sugar" is almost certainly 1/2 cup for 3 cups of milk and 5 eggs; "teaspoon vanilla" is 1 teaspoon. Both are ambiguous as printed, so treat them as starting points rather than gospel.
- A slow oven300 to 325F. Anything hotter drives the water bath toward a boil, which is exactly the fault the recipe warns against.
- Why the water must not boilEgg protein sets around 175F. Once the surrounding water reaches 212F the custard overshoots, the coagulated protein contracts and squeezes out liquid, and you get the "porous consistency" — curdled, weeping, full of small holes. Keep the bath at a bare tremble; adding a splash of cold water mid-bake is legitimate.
- TemperingScalded milk means about 180F, just below a simmer. Pour it into the eggs in a thin stream while whisking, or you will scramble them before the custard ever reaches the oven. The straining step afterwards catches whatever did set.
- The doneness testThe clean-knife test works but tends to run late. A thermometer in the center reading 170 to 175F is more reliable; the custard should still wobble as a single mass when the dish is nudged, and it will firm as it cools.
- TimingSmall moulds or 6-ounce ramekins take 30 to 40 minutes; one large mould of this size needs 60 to 75. The original gives no time at all.
- YieldAbout 4 cups of custard — six generous individual servings, or eight small ones.
- VesselsButter the moulds as directed if you intend to unmould; skip it and serve from the dish if you do not. A folded towel in the bottom of the water-bath pan insulates the base and helps prevent the underside setting first.
Lowney's Cook Book (1907), compiled by Maria Willett Howard, was published by the Walter M. Lowney Company of Boston to sell chocolate and cocoa, but it padded its pages with a full general repertoire — and baked custard was as standard as bread. The dish itself is far older than the book: a sweetened egg-and-milk mixture set gently in a water bath descends from the medieval European custard tarts that gave the word its name, from Old French croustade, a crust. Custards baked alone in moulds, without a crust, were long established, while crusted custard tarts continued alongside them. The insistence on a slow oven and a water bath that never boils is the standing preoccupation of period cookery writing on eggs, in an age when the cook judged temperature by hand and instinct rather than a dial.