You may have a delicious cookie recipe that calls for two cans of sweetened condensed milk. You may start making those cookies, take the cans out of the cabinet and then realize that, despite coming in virtually identical packaging, sweetened condensed milk and evaporated milk ARE NOT THE SAME THING.

*headdesk*

Don't let this happen to you, my friends! Read the labels!
Excuse me, now, I'm off to get very creative in the kitchen.