01 -
3 lemons, zested.
02 -
½ cup sugar.
03 -
3 cups all-purpose flour.
04 -
1 tablespoon baking powder.
05 -
½ teaspoon kosher salt.
06 -
¼ teaspoon baking soda.
07 -
1 cup cold butter, cubed.
08 -
1 large egg, cold.
09 -
⅔ cup buttermilk, plus more for brushing.
10 -
½ cup powdered sugar.
11 -
2 tablespoons lemon juice.