
Historic recipe from Malinda Russell's 1866 cookbook "A Domestic Cook Book". Page 24. One of the earliest known cookbooks by an African American author.
Beating egg whites incorporates air bubbles that are stabilized by egg proteins, creating a meringue-like foam. The extended beating time (one hour) allows the apple purée to fully integrate while maintaining volume, as the pectin from cooked apples helps stabilize the foam structure. The acidity from lemon juice lowers the pH, which strengthens protein bonds in the egg whites and prevents overbeating, while also brightening the apple flavor and preventing oxidation.
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Boil twelve large apples, remove the skin and strain through a sieve, beat the whites of ten eggs to a stiff froth, sweeten to the taste, and beat with an egg whip one hour, flavor with lemon; to be eaten with cream.
The apple purée can be prepared up to 2 days ahead, cooled completely, and refrigerated in an airtight container. Bring to room temperature before whipping with egg whites. The finished float is best served immediately after preparation, as the egg white foam will begin to deflate after 2-3 hours.
This dessert is best enjoyed immediately after preparation. If necessary, it can be refrigerated for up to 4 hours, though the texture will become denser as the foam settles. Cover loosely with plastic wrap to prevent a skin from forming. Do not freeze, as the egg white structure will collapse upon thawing.
