Ingredients
Cake:
5 ¼ cups all-purpose flour
4 ½ tsp baking powder
1 tsp sea salt
5 cups white sugar
2 ¼ cups butter, at room temperature
9 egg whites
1 ½ cups milk
1 ½ cups sour cream
1 cup freshly squeezed lemon juice
3 tbsp lemon zest
3 tbsp vanilla extract
4 cups freeze-dried raspberries
Syrup:
1 tbsp water
1 ½ cups frozen mixed berries
1 tbsp sugar
1 tbsp lemon juice
Frosting:
1 ½ cups butter, at room temperature
7 cups powdered sugar
4 tbsp lemon juice
¼ tsp sea salt
