For cans and bottles (not sure about the cardboard boxes) Yoo-hoo doesn't have an expiration date. It's pasteurized in the can or bottle, and, so long as the container remains sealed, it won't go bad.

How bad is Yoohoo for you?

Yoo-Hoo is a perfectly safe, fun treat for people to enjoy. It's 99 percent fat free and despite what the suit claims, contains insignificant amounts of hydrogenated oil.

Is Yoohoo watered down chocolate milk?

The drink is refreshing and satisfying, but one thing is for sure: It's not chocolate milk. ... Technically, there's no liquid milk in Yoo-hoo. Both the original chocolate and strawberry flavors of Yoo-hoo may taste like chocolate and strawberry milk, but Yoo-hoo must be labeled as a “drink,” not a flavored milk.