Easy Ways to Eat Less Fat Tip Sheet Hold the mayo! If you order a Double Whopper with Cheese without mayonnaise, the fat grams in your sandwich go from a whopping 63 fat grams to 43 fat grams. Instead ask for barbeque sauce, ketchup or mustard for your burger or sandwich.   Is your salad dressed to kill? If you overdress your salad, it can become as fatty as a Big Mac. Use less dressing and choose reduced-fat dressing. Also stay away from higher-fat toppings like avocado, bacon bits, cheese, croutons, eggs, olives and sunflower seeds.   Skin your chicken! You can cut the fat in half by removing the skin and breading from the chicken and not eating the fatty wing meat.   Order small fries instead of large! Small fries at McDonald's have 10 fat grams compared to 22 fat grams for large fries and 26 grams for super size fries.   Choose a roast beef or turkey deli sandwich. Turkey or roast beef sandwiches without mayo are your best bets. But if you must smear even a tablespoon of mayo on a turkey sandwich, the total fat triples from 6 grams to 19 grams.   Order a plain baked potato. A plain baked potato has no fat. If you add a pat of butter, you add 4 grams of fat. If you add cheese sauce to your baked potato, you add about 24 grams of fat. An order of Wendy's Biggie Fries has 22 grams of fat.