Given the task definition and input, reply with output. In this task, you have to generate the title of the recipe given its required ingredients and directions.

ingredients: '2 c. flour', '2 tsp. baking soda', '4 Tbsp. cocoa (heaping)', '1 c. mayonnaise', '1 c. sugar', '1 tsp. vanilla', '1 c. water',<sep> directions: 'Mix mayonnaise, vanilla and water, then gradually add to dry ingredients.', 'Dough is very thick.', 'Bake at 350 for 30 to 40 minutes.'
Chocolate Mayonnaise Cake