Here’s the easiest trick, and it doesn’t involve a tape measure or a degree in engineering. Grab a water pitcher or a big measuring cup (yes, the one you use for pancake batter). Fill your crock pot insert to the brim with water, then pour that water back into the measuring cup in quarts or liters.
If you’re using a standard kitchen measuring cup, remember: four cups equals one quart. So, if you ladle out sixteen cups of water, congratulations—you’ve got a four-quart cooker. If you hit twenty cups, you’re living large with a five-quart model. It’s a little messy, but it’s also oddly satisfying, like solving a riddle while wearing an apron.
