Chocolate Zucchini Cake - cooking recipe

Ingredients

1/2 c. soft margarine
1/2 c. vegetable oil
1 3/4 c. sugar
2 whole eggs
1 tsp. vanilla
1/2 c. sour milk*
2 1/2 c. unsifted flour
4 Tbsp. cocoa
1/2 tsp. baking powder
1 tsp. baking soda
1/2 tsp. cinnamon
1/2 tsp. cloves
2 c. zucchini finely diced (not shredded; works best with firm flesh of very large one)
1/4 c. chocolate chips

Preparation

*To make sour milk, add 1 teaspoon lemon juice to 1/2 cup whole or skim milk.
Let stand 5 minutes before using.