With the purpose of avoiding food deposits, possible infections, hemorrhages, and other affectation of the dental alveolus, a soft diet must be strictly adhered to for at least the first 24 hours.
Very hot foods can break a clot and cause bleeding at the surgery site. they may cause dryness. Similarly, spicy foods can cause irritation and infection.
When food enters the hole, which is normal, if it does not bother you too much, you can choose to leave it; over time it will come out on its own.
24 hours after the extraction, you can rinse with warm salt water (such as saline, to help remove food that has lodged in the hole.
If salt water is not to your liking, you could also rinse with an infusion of warm herbal tea. Some have known anti-inflammatory properties: chamomile, turmeric, and green tea.