Allow to cook at least 8 hours on low (in the older Crockpots -- the newer ones sometimes seem to cook too high). I usually cook mine overnight, then even allow it to cook part of the day before turning it to warm.
***It can also be cooked on the stove, if you need it to get done sooner. In this case, you may want to leave the water out.
Enjoy on hot dogs (or "saucedogs" for my daughter who doesn't like hotdogs, and only eats sauce on a bun LOL) or use as a sloppy joe filling!