enrich means: A food or ingredient can be enriched to increase its nutritional value. You can add milk, egg, soy protein, flour or enriched flour to bake goods. (in Cooking Dictionary)
What else does enrich mean?
To be more fulfilling, meaningful or rewarding. (in Merlin Dictionary)
Add fertilizer. (in Merlin Dictionary)
Add to beauty and character by; embellish. (in Merlin Dictionary)
Increase the quantity of radioactive elements in a substance, particularly a fuel nuclear reactor. (in Merlin Dictionary)