INGREDIENTS
2 1/4 cups
cake flour (300g, plus a pinch for the berries)
1 1/2 cups
granulated sugar (342g)
1 tsp
baking powder (heaping)
1 tsp
kosher salt
1 cup
whole milk (240ml, room temperature)
1/4 cup
sour cream (60ml, room temperature)
1 tbsp
vanilla extract
6
large egg whites (room temperature)
3/4 cup
unsalted butter (176g, room temperature)
1 tbsp
lemon juice
18 oz
raspberries
18 oz
cup blueberries
3 cups
heavy whipping cream (720ml, cold,)
1 cup
confectioners sugar (125g)
8 oz
mascarpone cheese (225g, room temperature)
1 tsp
vanilla extract