On ayambil, you generally eat simple, bland, single-cooked Jain food.

Commonly allowed

• Plain grains like rice, wheat, bajra, jowar, barley, etc.
• Pulses/legumes in a simple form, depending on local tradition
• Plain vegetables that are permitted in your Jain practice
• Water
• Food cooked without taste-enhancing items

Usually not allowed

• Salt
• Oil or ghee
• Spices
• Sugar/jaggery/sweets
• Fried foods
• Milk, curd, buttermilk
• Tea, coffee
• Fruits and raw foods in many ayambil traditions
• Any item taken for taste, pleasure, or indulgence

Key rule

Ayambil is meant to be completely tasteless or very plain, eaten only once in a simple form, with the spirit of tapas, control, and detachment.

Note on practice

Exact rules can vary a little by Shwetambar tradition and local custom, but the core principle remains the same: no taste, no luxury, no stimulation.

If you want, I can also give you a clear ayambil allowed / not allowed list in table form.