INGREDIENTS
1 tsp
Lemon, zest
1 tsp
Lime, zest
1 1/2 cups
Rhubarb, fresh or frozen
3
Egg whites, large
2
Egg yolks, large
1 1/2 tbsp
Lemon juice, fresh
1 1/2 tbsp
Lime juice, fresh
3 tbsp
All-purpose flour
1 pinch
Salt
3/4 cup
Sugar
2 tbsp
Butter, unsalted
13/16 cup
Milk