"One should not eat until his stomach is full. Rather, [he should stop when] he has eaten to close to three quarter's of full satisfaction. One should drink only a small amount of water during the meal, and mix that with wine. When the food begins to be digested in his intestines, he may drink what is necessary. However, he should not drink much water, even when the food has been digested."

Maimonedes Human Dispositions 4 (Trans. by Eliyahu Touger)