Jalapeno pepper, sliced or whole are often served hot or cold on top of nachos, pizza, sandwich, wraps and burgers. Chopped jalapenos are a common ingredient in many salsas. Whole Jalapeno are the small hot green peppers often associated with Mexican dishes and originated from Mexico It is used in slice form on nachos, pizzas, burgers and sandwiches. It is used to make salsa and jelly. Vitamins found in jalapenos are excellent anti-oxidants.