Hitchcock Farms Multi Leaf Green Lettuce was grown specifically with burgers and sandwiches in mind. Crisp like iceberg, but flatter, leafier, and darker in color, each head separates easily into perfect-for-layering leaves that are slightly larger than the average burger bun. What really makes this maximum yield green stand out is its ability to maintain maximum crunch, flavor, and shape up to 240?F. Each carton contains 24-30 heads, which depending on use, means about 720 heat-resistant servings.