An Iceberg lettuce is a crisphead-type lettuce with a solid,
spherical heart. It is individually wrapped in clear film and trimmed so that a single
whorl of pale greenish wrapper leaves remains, with all the leaves attached to the central
base. Good-quality iceberg lettuce will have fairly large, moderately firm heads that give
to gentle pressure, and thick leaves. The leaves will be medium to light-green in color
blending to nearly white ribs or veins. Scratch the stalk and smell. A sweet or bitter
smell means sweet or bitter flavor.
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