In Jainism, mint can be eaten, but only if it is within your vow or observance.

A simple guidance:

• For सामान्य Jain diet: mint is generally allowed.
• If you are observing stricter vows like Ayambil, fasting, or certain upvas rules, then green leafy items, including mint, may be avoided depending on the practice.
• Always ensure it is clean and free from visible insects or excessive violence, following Ahimsa.

So, yes, mint may be eaten in summer in general Jain practice, but restrictions depend on the specific vrat or niyam you are following.