For the Biscuits:
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Flour: 2 cups all-purpose flour.
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Baking Powder: 1 tablespoon (gives them that signature dramatic lift).
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Sugar: 3 tablespoons granulated sugar (just enough to lean sweet without turning into cookie dough).
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Salt: 1/2 teaspoon fine sea salt.
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Lemon Flavor: Zest of 1 large lemon (rubbed directly into the sugar).
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Butter: 8 tablespoons (1 stick) unsalted butter, melted and cooled slightly.
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Liquid: 1 cup cold buttermilk. The acidity reacts with the baking powder for maximum fluffiness.
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Blueberries: 1 cup fresh blueberries (if using frozen, do not thaw them or they will turn your dough completely purple).
For the Bright Lemon Glaze:
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Powdered Sugar: 1/2 cup.
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Lemon Juice: 1 to 2 tablespoons fresh lemon juice (whisked together until smooth).
The Method
The absolute secret to a drop biscuit’s signature texture is minimal handling. Over-mixing develops gluten, which will turn your light, pillowy biscuits tough and dense.
The Frozen Berry Trick: If you are using frozen blueberries, toss them in a tablespoon of extra flour before folding them into the dough. Keep them in the freezer until the absolute second you need to drop them in to prevent color bleeding.