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Jelly Roll Mixture
1 pound of sugar. 14 eggs-or 1 or 2 less, if large. 1 pound of flour. 1/2 cup lukewarm water. 1/2 teaspoonful of soda-small. Lemon or vanilla flavor. Beat eggs and sugar together until light and thick and increased to three times the original bulk, gradually add the water while beating, with the soda dissolved in it. Stir in the flour just long enough to put it well out of sight, as usual for sponge cake.
Bake on manilla paper slightly buttered, and to get the roll of uniform thickness run the batter out of a lady-finger tube in lines on the paper almost touching, that they may run together and make an even sheet of cake.
This is a bakery-scale sponge, written for a shop that turned out jelly rolls by the dozen. The proportions are sound; the quantities and the paper need translating.
- Scale it downA pound of sugar, a pound of flour and fourteen eggs is roughly four times a home batch. One quarter of the recipe — 4 oz sugar, 4 oz flour, 3 to 4 eggs, 2 tablespoons water, a pinch of soda — is about right for a standard jelly-roll pan and makes a single roll.
- Weigh, don't measureA pound of sugar is about 2 1/4 cups; a pound of flour is 3 1/4 to 3 1/2 cups by modern scoop, but flour then was measured by weight in shops and the scale is the safer guide. Use plain all-purpose, not self-rising or bread flour.
- The hinge is the egg foamThere is no chemical leavening worth speaking of here — everything depends on beating whole eggs and sugar to three times their bulk. Warm the eggs to about 100F over a water bath first; cold eggs will not reach that volume, and a sponge that does not triple will bake into a sheet too dense to roll.
- Folding the flour"Just long enough to put it well out of sight" is exact and worth obeying. Sift the flour over the foam in two or three additions and fold with a spatula; overmixing collapses the aeration you spent ten minutes building.
- The sodaHalf a small teaspoon in this quantity contributes little lift; with no acid in the batter it mostly raises the pH, which is likely what softens the crumb and helps the sheet stay pliable. Do not increase it, and dissolve it in the water as directed so it does not leave alkaline specks.
- Manilla paperLightly buttered, was the bakeshop's release liner. Use parchment; a silicone mat works but gives a slightly damper surface, which makes the sheet harder to peel cleanly.
- Oven temperatureNone is given, as the recipe assumes a working shop oven. A thin sponge sheet wants a hot oven, 400 to 425F, for 5 to 8 minutes — long enough to set, short enough that the edges stay soft. A sheet baked slowly dries out and cracks when rolled.
- The piping trickRunning the batter out of a lady-finger tube in touching lines is a genuine bakery method for an even sheet, and it still works. A spatula spread of uniform depth does the same job at home; the point is consistent thickness, since thin edges overbake before the center sets.
- RollingTurn the sheet out onto a sugared cloth or fresh parchment while still warm, peel the baking paper, and roll it up loosely with the cloth inside. Let it cool rolled, then unroll, spread the jelly and re-roll — a sheet cooled flat will split.
Jelly roll is the American name for a sponge sheet spread with preserves and rolled, a form that appears across Europe in the nineteenth century and is generally traced to the same family of thin whisked sponges that produced the Swiss roll in Britain and the roulade in France. What marks this version as a professional formula is the arithmetic: everything is in round pounds, the egg count is adjusted for size rather than measured by volume, and the instruction assumes a pastry bag with a lady-finger tube already in hand. The American Pastry Cook was written for men working a bakeshop bench, where a "mixture" was a base batter to be turned into several finished goods. The reliance on beaten whole eggs rather than baking powder reflects an older technique that survived in the trade.