Answer

Yes, fudina / pudina (mint) is generally allowed on Tithi, because it is a leaf/herb and not a root vegetable.

Explanation

In Jain food discipline, especially on Tithi days, people commonly avoid:

• Kandmool such as potato, onion, garlic, carrot, beetroot, etc.
• Foods considered unsuitable according to family or sect tradition

Fudina grows above the ground and is used as leaves, so it is not usually counted as kandmool.

Important Note

Practices can vary by family, gacch, sampradaya, or personal niyam. Some people may avoid green leafy items on certain stricter tapas or vrat days. So if your family or guru has a specific rule, follow that.

Takeaway

For normal Tithi food, fudina is generally allowed, unless your personal or family niyam says otherwise.