Pressure cooker + HOT Rocks = delicious, and healthy cooking ???.
Put hot rocks inside a pressure cooker, add meat /or chicken, then lock it.
Now, you can kept for one hour or 5 hours, it keeps hot for long, and never over burn your meal. Also, it's movable, you can take it to a picnic with you while cooking.
Step 1: Preparation
1- some rocks (strong rocks; that do not crack with high temperature)
2- pressure cooker (big size is better).
3- aluminum foil.
4- any kind of tweezers for catching the hot rocks.
5- Chicken or meat ( in my example, I prepared two chickens stuffed with rice. also, I packed some Vegetables inside aluminum sheet)
Step 2: Heating the Rocks
2- heat the rocks with any source of fire (ex. stove, or even coal. usually they need to be heated for 10 - 15 min.
But you can stop when you see parts of the rocks are turning from black to red.
Step 3: Start cooking
2- cover them with aluminum foil, so you keep your food clean.
Step 4: Put your chicken
2- cover the chicken with another sheet of aluminum.
Step 5: Put the rest of rocks and close
2- lock the pressure cooker.
Now you can wait for minimum 50 minutes.
Or if you want you can leave it for 4 hours and it will still be hot, and it will not over burn your chicken. Also, it will keep warm for more than 4 hours.