7 foods you should always refrigerate

Ever wondered whether it's okay to keep butter out of the fridge, or what to do with jam after you open it?

Wonder no more.

First, when it comes to perishables, the FDA recommends refrigerating or freezing them right away. And as a general rule, meat, seafood, eggs, and certain kinds of produce should never be kept at room temperature for more than two hours (or more than one hour if it's hotter than 90 degrees Fahrenheit).

But what about soy milk? Jam? Read on to find out what you should be keeping in the fridge for optimal enjoyment.

Note: This is not intended as a substitute for public-health recommendations.