Coca-Cola Cake - cooking recipe

Ingredients

1 c. butter or margarine
1 c. Coca-Cola
2 c. sugar
1/2 c. buttermilk*
1 tsp. vanilla
3 Tbsp. powdered cocoa
2 c. sifted all-purpose flour
2 eggs
1 tsp. soda
1 1/2 c. miniature marshmallows

Preparation

*To make buttermilk, add 1 tablespoon lemon juice to a cup of milk; let sit for about 15 minutes.