During Paryushan (also spelled Payushan), which is one of the most important and sacred festivals in Jainism, Jains observe strict dietary restrictions to promote ahimsa (non-violence), self-discipline, and spiritual upliftment. The food consumed during Paryushan is strictly sattvic (pure), and many ingredients are avoided.

Guidelines for Food During Paryushan:

1. No Root Vegetables: Potatoes, onions, garlic, carrots, beets, and other root vegetables are avoided as uprooting them kills the plant.
2. No Green Leafy Vegetables: Many Jains also avoid leafy vegetables during these days.
3. No Fermented Foods: Fermentation is believed to increase micro-organisms, so foods like yogurt, bread, and idli are usually avoided.
4. No Fresh Fruits or Vegetables (on certain days): On Samvatsari (the last day) and sometimes during the entire festival, some Jains avoid even fresh fruits and vegetables.
5. No Eating After Sunset: Eating is usually restricted to daylight hours to avoid harming small insects that may be present after dark.
6. Simple and Limited Food: Meals are very simple, often just plain grains and pulses.

Food Delivery During Paryushan: If you are seeking food delivery for Paryushan, it is essential to ensure that the provider is aware of and strictly follows Jain Paryushan food guidelines. Many Jain communities and organizations arrange special meal services (Parshad) during this period, where all religious rules are observed. Some Jain restaurants or caterers offer "Paryushan menu" or "Paryushan thali" for home delivery, complying with all restrictions.

What to Check Before Ordering:

• Confirm that the kitchen is following Jain Paryushan rules strictly.
• Ask about their ingredient list and preparation process.
• Prefer food from known Jain community kitchens or certified Jain caterers during Paryushan.

Summary: Food delivery during Paryushan is possible but must adhere to stringent Jain dietary rules. Always verify the source to ensure religious practices are honored. If you're arranging for someone else, it is best to consult your local Jain temple or community for trusted references.