INGREDIENTS
1 tsp
Key lime, juice
3
Key lime, Zest from
1
Egg white
2 1/2 tbsp
Honey
1/2 tsp
Baking soda
1/2 cup
Brown sugar, dark
1/8 tsp
Cream of tartar
1 pinch
Salt
1/2 tsp
Sea salt, fine-grain
1/4 cup
Sugar
1 tbsp
Vanilla extract, pure
3 1/2 tbsp
Butter, unsalted
2 1/2 tbsp
Whole milk
1 3/4 cups, plus 1 tablespoon, all-purpose flour