Only four ingredients go into this surprisingly simple and tasty mayonnaise biscuits recipe. The mayonnaise replaces the fat found in most biscuit recipes and the vinegar in the mayonnaise makes the biscuits light and fluffy, in much the same way it does for pie crust. This is a drop biscuit recipe, which means rolling and cutting are not required. The yield is 12 biscuits, so you will need two 6-well muffin tins or one 12-well muffin tin. For a rougher appearance, equal mounds of biscuit dough can be dropped onto well-greased baking tins.