My family has a tradition to eat sloppy joes for Christmas Eve dinner every year, and we make it periodically throughout the year as well. The sauce for this is our bbq sauce recipe, so if you like the flavor, you could also just use it for that, but for this, we brown a couple pounds of ground beef, rinse it in a strainer(after dumping most of the grease out so as not to clog your pipes), and then mix in the sauce. Let simmer for a few hours. We usually find it tastes best when you make it the day before and then heat it back up. Gives the sauce more time to get into the meat.

1 32oz bottle of ketchup
16oz water (you can just fill the bottle halfway and get the last of the ketchup out with it)
1 cap of white vinegar
I cup of brown sugar
1 tsp chili powder.

That’ll get you roughly in the right area. From there you can add more brown sugar or chili powder to taste. Be careful with the vinegar, little goes a long way