Bhagavad Gita, Chapter 17, Verse 8

The foods which augment vitality, energy, strength, health, cheerfulness and appetite, which are savoury and oleaginous, substantial and agreeable, are liked by the Sâttvika.

Real, tangible benefits are named here directly, longer life, real strength, genuine satisfaction.

Krishna doesn't describe these foods abstractly, he lists concrete, physical outcomes. Real nourishment here means more than just taste.