Modifiers matching lettuce:

• crisp,
• bitter,
• torn,
• mild,
• mixed,
• dark,
• small,
• leafy,
• clean,
• hearty,
• new,
• fresh,

Simple categories matching crisp:

• lettuce,
• apple,
• vegetable,
• fruit,
• food,
• veggie,
• material,
• ingredient,
• leaf,
• green,
• veg,
• wine,
• item,