How to select for best flavor:
The best way to judge the freshness of butter lettuce is to check the butt end. It should be a creamy color and have a sweet scent. The leaves should be a light yellowish-green and loosely packed on the head. Avoid heads with wilted, damaged, rusty or slimy leaves.
Peak of the season:
Butter lettuce is highly perishable and doesn’t ship or store well. It comes available in early spring and is around for most of the season and through summer.
Butter lettuce is a great source of vitamin A, potassium and calcium. One average head has about 20 calories, no fat and about 8 mgs. Of sodium.
Butter lettuce is very soft and perishable. It needs to be eaten right away. If necessary, it can be stored in the refrigerator for a day or two, but it loses its freshness quickly. Never store it near apples, pears, plums, avocados, tomatoes or melons. These fruits give off ethylene gas as they ripen, which makes lettuce develop rusty spots.