Here goes:
1 32 oz bottle of ketchup
1 cup water
1/4 c. prepared mustard (any kind, dijon, regular, doesn't matter)
1 c. brown sugar, packed
1 T. dried minced onion
2 T. liquid smoke (you can find this by the other sauces and marinades and it also stays good for a really long time!)
Mix all together in a medium sized pan. Bring to a simmer for a few minutes. You'll notice the color will start to change a little, more like bbq sauce brown than red. Take it off the heat and put it in your container! That's it! It is yummy with chicken ( like to cook chicken with this in the crockpot and then have bbq chicken sandwiches), pork, beef, hamburgers, and even baked beans!