Do Sprinkles Expire?
Sprinkles do have expiration dates and can taste rancid if they're well past their prime. So if you have sprinkles that have been lingering in your kitchen, give them a sniff and then taste if you suspect they may be old. Rancid sprinkles will ruin a cookie recipe. Thanks to my friend, Sue, the blogger behind The View from Great Island, for alerting me to this.