Play a game of Spanish roulette with your taste buds. A favorite appetizer in Spain, these early maturing and thin-skinned peppers have a mellow flavor but every so often you’ll bite into one that is fiery hot! Appetizer-size peppers of 1″-1 1/2″, range from 500 to 2,500 Scoville heat units, but may be hotter at 2″-3″ and as they ripen to red.