Red, White, and Blue Velvet Zebra Bundt Cake

INGREDIENTS

Strawberries and blueberries

Egg whites

1 tsp

Baking soda

2 1/2 cups

Cake flour

1 tsp

Cocoa powder, unsweetened

1 1/4 cups

Granulated sugar

1 1/2 tsp

Liquid food coloring, red

2 cups

Powdered sugar

drops Royal blue gel paste food coloring

1 tsp

Salt

1 tsp

Vanilla extract

drops Violet gel paste food coloring

1 1/4 cups

Vegetable oil

1/2 tsp

White vinegar

1 1/4 cups

Buttermilk

2 tbsp

Greek yogurt