Some choices from link:
Salsa was proven at the Oxford Institute to stimulate the metabolism approximately 15 to 20%. It's also America's number 1 condiment now. You can throw it on anything from baked potatoes and scrambled eggs to beans and even veggies. It's going to help because it is a natural thermogenic food that increases your metabolism. Of course, the hotter the better, but only choose what best suits your taste buds.
Chili Sauce / Mustard -
British investigators added about 3/5 of a teaspoon of hot chili sauce or ordinary mustard to a meal, and the hot stuff caused average metabolism in 12 subjects to shoot up 25%! The subjects burned off an extra 45 calories in the next 3 hours. Mustard and hot sauces such as Tabasco, caused one person to burn off 76 calories!
Ice Water -
High water intake reduces fat deposits and rids the body of toxins. Simply drinking eight 16 oz. glasses of water throughout the day, cooled to 40 Fahrenheit, will burn 200 calories; that's equivalent to running 3 miles! Ice water will burn more calories since your metabolism will increase to warm the water to body temperature. It is also very effective for reducing cravings. If you're not a water fan, we suggest you experiment with purified, spring or reverse osmosis water. If you're still not convinced, add a little juice for flavor. Don't drink Ice Water with meals as it dilutes digestive enzymes. A little warm water or herb tea is a good choice then.
Grapefruit is not a diet myth. It actually helps dissolve fat and high cholesterol, as proven at the University of Florida, by Dr. James Cerda. Grapefruits are loaded with over 15 grams of pectin, which helps curb your appetite by expanding in the body and making you feel fuller, longer. It is rich in natural galacturonic acid, which adds to the potential to fight fat and cholesterol. Try sprinkling cinnamon on your grapefruit to reduce the tart taste, or a little fructose if you have a sweet tooth. For a unique taste, sprinkle the grapefruit with cinnamon and broil for a few minutes; it makes a nice appetizer for a meal.