ketchup

Can it be left out or should it be stored in the fridge? People have big feelings about this topic, so we got some answers.
Even Barack Obama says no one past the age of 8 should do it.
Ketchup, mustard, mayonnaise, vinegar ― they don't all need to be refrigerated. Here are the rules.
"Sometimes I like to live dangerously by putting ketchup on my kid’s dinner plate without asking where they would like it first."