Dionysus is more than used to being around people -- notably his family -- who can generally make whatever they want. And can shape shift. And can teleport. And can do a whole host of things that he cannot, and who (other than a few notable exceptions), have made him feel less than because of it his whole, very long life. He is a very powerful god, he's an Olympian for crying out loud, it's just that he's very powerful at a few incredibly specific things, which under normal circumstances does not involve making any food other than grapes.

So this is like an absolute dream come true to him, even if he's reasonably certain he'll wake up tomorrow back to normal.

"It is pretty cute, I'll admit. It was an attempt at making a sibling for Sagramore's pet chicken, though."