"Which side will you eat first?..."
all-purpose flour
kosher salt
baking powder
baking soda
(1 1/2) sticks butter, softened
granulated sugar
Zest of 1/2 lemon
large eggs
pure vanilla extract
almond extract
sour cream
milk
powdered sugar
corn syrup
hot water, divided
pure vanilla extract
cocoa powder, preferably dutch process