Satiation comes from Taanug:[1]
Satiation from food comes from the spiritual power found in the food. This spiritual power is found specifically in the Taanug of the food. This can be vividly seen from the fact that when one eats good tasting food he feels satiated more than one who eats the same food that does not taste good. Eating tasty food satiates as the taste carries spiritual energy.
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[1] Or Torah [Maggid] Parshas Vayechi 59