Red Gem lettuce varieties are generally small to medium in size, depending on the specific cultivar and growing conditions, and have slightly elongated heads comprised of densely packed leaves. The leaves grow in layered, furled rosettes and are condensed at the lettuce's base, expanding, fanning, and loosening at the top of the head, showcasing the ruffled leaf edges. Red Gem lettuce varieties have a crisp, tender, and succulent consistency. The leaves bear a delicately sweet flavor combined with nutty and vegetal nuances.