The term ROMAINE ALTERNATIVE is referring to two types of lettuce, ICEBERG and Bibb. ICEBERG lettuce is a type of lettuce that is characterized by its crunchy texture and pale green color. It is also known for its high water content. Bibb lettuce is a type of butterhead lettuce that is characterized by its soft texture and sweet flavor. It is also known for its loose leaves and mild taste. Both ICEBERG and Bibb lettuce are popular alternatives to Romaine lettuce.