Choose lemon when:

• You want a brighter, sharper, slightly floral citrus note.
• You are working with Mediterranean-ish flavours: chicken, fish, parsley, yogurt, olive oil, lentils.
• You want something that reads “fresh and clean” in flavour.

Choose lime when:

• You want a greener, more bitter-tart, punchier citrus note.
• You are working with beans, rice, chilies, cilantro, cumin, coconut, avocado, tacos, Thai-ish or Caribbean-ish flavours.
• You want something that feels more “refreshing” in a drink or spicy food context.