In Jain practice, if nuts are already stored in the refrigerator, they may generally be used only if they are still within the permitted time and remain suitable as per your tradition. But for ekasana, the main point is not the refrigerator itself — it is whether the food is allowed in ekasana rules and whether it is fresh, non-fermented, and taken in one sitting.

What to do with nuts stored in the refrigerator

• If they are plain, uncooked, and dry nuts, they are generally considered acceptable in many Jain households.
• If they are old, stale, mixed with moisture, or have been kept too long, it is better not to consume them.
• If your tradition is strict about refrigerated food, follow the practice of your guru or local Jain elders.
• Avoid nuts if they were stored with other prohibited items or if there is any doubt about purity.

What to consume in ekasana

In ekasana, one usually eats one time only in a day, and within that meal the food should be appropriate and wholesome according to Jain rules.

Commonly suitable items may include:

• Rotli / roti / chapati
• Rice
• Dal / beans only if your tradition allows and they are prepared appropriately
• Plain vegetables
• Dry fruits and nuts
• Milk, buttermilk, or simple items if they are permitted in your observance

Important Jain point

In many Jain traditions, ekasana also means:

• eating only once
• eating before sunset or within the fixed time
• avoiding spicy, fermented, or indulgent foods
• not eating again after that meal

Simple rule

If the nuts are clean, dry, fresh enough, and permitted in your ekasana vow, they can be consumed. If there is any doubt about freshness or Jain suitability, it is better to avoid them and keep the observance pure.

If you want, I can also give you a simple ekasana food list in Jain style.