It's the mysterious yellow condiment with which we smother everything from tuna salad to BLTs. Unfortunately, mayonnaise is high in cholesterol. That's because it's made with eggs--and not the healthier white part of the egg, either. Mayonnaise is made solely with the yolk--the part of the egg that's highest in cholesterol, fat, and calories. So, how can you get that creamy, slightly tangy taste in a healthier form? Try substituting plain, low-fat Greek yogurt. You'll completely cut the cholesterol while getting a healthy serving of protein. A typical 6-ounce serving of Greek yogurt contains 15 to 20 grams of protein. Your coleslaw recipe just got a lot healthier!