No, most dishes provide bonuses only once. For example, I can copy a dish that doesn't cost the recipient any Action Points (AP), gives +1 to Spirit, and costs me 20 resources + 1 AP, instead of 100 resources and 0 AP. But since I already have to eat it to unlock the recipe, I can only save money for my friend in this way. And not by much.
/ Regarding the Titan schemes, I like everything, but please, let it be at least 18 years old, not a child. Otherwise, Fyr-Fyr won't hire him. And it would be good if Frag asked if he was planning to summon Harold, although it's unlikely that this is possible. /