INGREDIENTS
10
Kumquats
1
Lemon, zest of
1
Orange, zest of
2
Oranges, small
1
Ruby red grapefruit, medium
1
Egg, large
1
Egg yolk, large
1 tbsp
Lemon juice, fresh
1 tsp
Baking powder
1/2 tsp
Baking soda
1 1/8 cups
Brown sugar, packed light
1 1/2 cups
Cake flour
1/3 cup
Granulated sugar
1 tsp
Nutmeg
3/4 tsp
Salt, coarse
11 tbsp
Butter, unsalted
3 tbsp
Sour cream
3/4 cup
Whole milk