It depends on the character. Different characters have different levels of hunger and different rates of decline.

Generally speaking, if you only eat roasted small meat, it will take at least seven or eight to go from extreme hunger to fullness. It usually takes three or four to cook large meat.

Nowadays, old players cook the pot as quickly as possible, and then use three berries + any meat to make meatballs, which is extremely cost-effective. Basically one can fill you up half full.

If there are flowers nearby, kill butterflies. Three butterfly wings + one meat are also meatballs. There is no one of the most practical recipes at present, because butterflies can be refreshed infinitely.