Hatha Yoga Pradipika -Moderate diet for Hatha Yogic Practices
Susnighdhamadhuraharaschaturthamsavivarjitah /
Bhujyate sivasamprityai mitaharah sa uchyate//(Chapter -1, Verse -58).
Mitahara is defined as agreeable and sweet food, leaving one fourth of the stomach free, and eaten. (Chapter -1, Verse-58).