"Oh, that's really good too!"
It expresses a strong agreement that something is delicious or enjoyable, and implies that the speaker is happy with the choice or offering.
Here's a breakdown of the phrase:
* Ah: An exclamation of surprise or agreement.
* yo también: "I also" or "me too."
* está bien rico: "It's really good."
So, the whole phrase signifies, "Oh, me too! That's really good!"