In Jain dharma, dinner and what you eat at night should be light, non-violent, and gentle to the body and mind. Here are simple guidelines:

• Favor vegetarian, non-root foods. Avoid root vegetables (like onions, garlic, potatoes, carrots, beets) as they involve harming living beings in their growth.
• Choose sattvic (pure) foods: milk, yogurt, paneer, ghee, cooked grains (rice, chapati), lentils, beans, cooked vegetables that are not roots, fresh fruits, nuts, and seeds.
• Avoid non-vegetarian items and eggs; also avoid onion, garlic, and heavy, overly spicy, or fried foods if possible.
• Eat in moderation and avoid overeating. If you follow a vrata or discipline, you may limit meals to one proper meal per day or eat only in the daytime; some practitioners fast or eat only once daily.
• For night-specific practices: many Jains prefer a lighter dinner and avoiding late-night heavy meals. If you have special vows (like ekasana, nirjala, or other fasts), follow your guru’s guidance for those days.

Notes on Digambar vs. Shwetambar:

• Both traditions generally prohibit meat, eggs, and root vegetables.
• They may differ on certain fasting rules or specific food rules during vrat (fast) days; follow the rulings given by your own tradition or spiritual guide.

If you’d like, I can tailor these suggestions to any particular vow you’re observing (e.g., a specific fast or daily routine).