Mayonnaise is a versatile condiment made from oil, egg yolk, and vinegar or lemon juice. Its smooth texture and tangy flavor pair nicely with sandwiches, salads, snacks, and other dishes. However, mayonnaise’s high-fat content increases the risk of weight gain. One tablespoon of traditional mayo has 93 calories and 10 grams of fat. Health professionals recommend limiting saturated fat intake to about 6% of calories to support heart health.