A solid fat invented in 1869 by the French chemist Henri Mege- Mouries. Margarine was first invented to replace butter in cooking and baking. It was then made solely of beef fat. Margarine is now made with a variety of fats, alone or with others, along with the addition of water, whey, yellow coloring, and vitamins. Beef fat is still used today, but with a higher consciousness towards a healthier diet, it is very rare.