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Meringue for Lemon Pies
The secret of making the meringue or frosting stand tall and thick on the pies is in the baking. Whip the whites of eggs to a froth that will not fall out of the bowl or pail when turned upside down, put in about a tablespoonful of granulated sugar for each white, stir very little, spread it on the pies when they are just done and still baking hot without taking them out of the oven, and let them bake with the door open. If made hot enough to brown the meringue will surely fall and become worse than nothing. 5 to 10 minutes is enough to bake the meringue dry and straw-colored. Sift granulated sugar on top of the meringue as soon as spread, before baking, to form a rich appearing crust for variety.
This is a bakery-trade note rather than a formula, and its logic is sound: the meringue's height depends almost entirely on how it is set. A few of the specifics need translating for a home oven.
- The hinge: spread onto a hot fillingMeringue put on a cold or lukewarm lemon filling weeps and slides, because the underside never coagulates. Spreading it on the pie while the curd is still bubbling hot cooks the base of the meringue from below, which is exactly what the original is getting at.
- "Not hot enough to brown" means a low oven"Not hot enough to brown" means a slow oven -- The author wants the meringue dried rather than baked. He gives no temperature, and the range he is writing for was judged by hand, so any figure is a modern approximation: a low oven with the door propped is the sense of it. Modern practice more often uses around 350F for 12-15 minutes, or a brief blast of higher heat for colour; the higher the heat, the faster the collapse the author is warning about, so watch it rather than trusting a timer.
- Sugar ratio is leanOne tablespoon of granulated sugar per white is roughly half what many current meringue toppings use. Less sugar means a lighter, drier, less stable foam that weeps sooner, and the low sugar is part of why this one must be dried slowly rather than browned hard.
- "Stir very little"Fold the sugar in with a spatula in a few strokes. Overworking after the sugar goes in knocks out the air the whipping just built, and the meringue will spread flat instead of standing.
- The upside-down bowl testA useful check, but it corresponds to stiff peaks, which is already close to the point of over-whipping. If the foam looks grainy or begins to separate into curds and liquid, it has gone too far and will not hold height.
- Clean equipmentAny trace of yolk, fat or detergent film will keep the whites from reaching volume. Glass, stainless or copper rather than plastic, which holds grease.
- Seal the edgesTake the meringue right out to the crust rim all round. Anchored meringue shrinks far less as it cools, which matters more here than with a sugar-heavy topping.
- Sifted sugar on topThis gives the crackled, pearly crust the author calls "rich appearing." It also draws moisture, so those pies are best eaten the day they are made.
- QuantityThree to four whites, with a tablespoon of sugar each, tops one 9-inch pie generously. A soft meringue like this does not reheat or keep well overnight.
- Egg safety, in passingMeringue dried at low heat for 5 to 10 minutes may not reach 160F throughout. If that matters for who is eating, a cooked or Swiss-style meringue is the usual modern answer.
Jessup Whitehead wrote for the professional trade of the 1890s, when a hotel or restaurant pastry cook was turning out lemon pies by the dozen, and his books are full of exactly this kind of shop-floor reasoning: not a list of quantities so much as an explanation of the one thing that goes wrong. Meringue itself is French in name and generally traced to European court and confectioner's kitchens, where whipped, sweetened whites were dried slowly in a cooling bread oven; recipes of this kind appear in European books at least as early as the seventeenth century, and the low heat and open door in this recipe are a direct descendant of that method, adapted to a coal range. The pairing with lemon filling is an American nineteenth-century habit, and by the 1890s lemon meringue was standard enough on pie lists that a trade manual could assume the reader already knew the filling and needed help only with the top.