A type of butter lettuce, Boston lettuce has large, soft, tender, gently cupped leaves. It's terrific in salads and sandwiches, or the leaves can be used as a bed for other dishes.
6 oz. (1 to 2 heads) = about 5 cups bite size pieces
Substitute Bibb, red leaf or green leaf lettuce
Look for leafy rosettes that are dense and heavy for their size. Avoid those with wilted or flaccid outer leaves or brown edges.
Lettuces are great at trapping soil in their leaves, so wash them as many times as it takes to remove the grit. The best way is to soak separated leaves in water and then lift the greens out of the water to leave the grit behind. Dry thoroughly, preferably in a spinner.
Pack washed and dried leaves loosely in a zip-top bag lined with paper towels, gently squeeze out most of the air, and seal.