Although you might favor buying mayonnaise at the supermarket, this condiment that adds flavor to sandwiches and also serves as a base for many types of dips and dressings is simple to make at home. Typically composed of oil, eggs and vinegar, mayonnaise has a high fat content. While it also contains small amounts of a few vitamins, you shouldn't view mayo as a way to get your daily doses of vitamins.
A tablespoon of cholesterol-free mayonnaise contains 1.77 milligrams of vitamin E and 3.7 micrograms of vitamin K, notes the U.S. Department of Agriculture. This amount provides nearly 12 percent of your recommended daily intake of vitamin E and 5 percent of your daily value of vitamin K. Vitamin E contributes positively to your immune system and aids in the development of red blood cells, while vitamin K helps your blood clot and can support strong bones in people as they age. Mayonnaise also contains trace amounts of thiamine, riboflavin, niacin and vitamin B-6.