These peppers pack mild heat, and turn sweeter as they ripen. Pepperoncini's first come out as a vivid green and yellow. Peppers eventually turn a Mars-like red. Bushy foliage protects peppers from sun scald. Perfect for pickling, pepperoncini's are also delicious in Mediterranean salads, pasta and sandwiches. These peppers contribute a sweet and mildly hot, yet salty vinegar crunch to the kitchen .