From America's Test Kitchen Season 7: Favorite Citrus Desserts
Lemons are tart, brash, and aromatic. Why, then, is it so hard to capture their assertive flavor in a straightforward Bundt cake? The flavor of lemon juice is drastically muted when exposed to the heat of an oven, and its acidity can wreak havoc on the delicate nature of baked goods. We wanted to develop a Bundt cake with potent lemon flavor without ruining its texture.
We developed a battery of tests challenging classic lemon Bundt cake ingredient proportions, finally deciding to increase the butter and to replace the milk with buttermilk. We also found that creaming was necessary to achieve a light and even crumb. But we still needed to maximize the lemon flavor; we couldn’t get the flavor we needed from lemon juice alone without using so much that the cake fell apart when sliced. We turned to zest and found that three lemons’ worth gave the cake a perfumed lemon flavor, though we needed to give the zest a brief soak in lemon juice to eliminate its fibrous texture. The final challenge was the glaze, and a simple mixture of lemon juice, buttermilk, and confectioners’ sugar made the grade.
Serves 12 to 14
You will need between five and six tablespoons of lemon juice for this recipe. Because the amount of juice can vary from lemon to lemon, we suggest you first measure the juice from the three lemons you have zested, then juice a fourth lemon if necessary. Serve this cake as is or dress it up with lightly sweetened berries. The cake has a light, fluffy texture when eaten the day it is baked, but if well wrapped and held at room temperature overnight its texture becomes more dense—like that of pound cake—the following day.
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