Blue Velvet Cupcakes
2 1/4 cup all-purpose flour
1/4 cup corn starch
1 tbsp unsweetened cocoa powder
1 tsp salt
1/2 tsp baking soda
2 cup granulated sugar
1 cup unsalted butter softened
2 egg
1 tsp vanilla extract
1 tsp vinegar
1 tbsp blue food coloring
1 cup buttermilk
Real Strawberry Buttercream
1 1/2 cup strawberries pureed
1 cup butter
1 tsp vanilla extract
4 cup powdered suga