You can find mixes for this old cake in the store, but they cannot compare to scratch, and September’s hot, dry weather is the perfect time to make it. It’s tricky; the water and cream of tartar go a long way to make sure you get good results.
Preheat oven to 350. Separate a dozen eggs, using caution to ensure no yolks make it into the whites. Bring whites to room temperature and stir in a tablespoon of water. Sift a cup of cake flour with a half cup sugar until it’s very light, at least twice, thrice is better. Beat egg whites in a large, very clean, dry bowl until foamy and sprinkle in a half teaspoon of cream of tartar. Continue beating, and as the texture begins to even out, add a teaspoon or two of pure vanilla extract and–gradually mix in another cup of sugar. Keep beating at a medium speed until the whites form stiff peaks, then carefully fold in the flour while sifting it over the whites. Use a spatula, and turn the bowl; the key is not to deflate the bubbles, so don’t over-mix.
Gently pour the batter into a 10-in. ungreased tube pan; the cake has to cling to the sides as it rises to make it crusty. Bake until the top is browned and springy. Use a knife to separate the cake out, and cool on a rack.
