Prepare the sauce: Combine catsup, salt, brown sugar, dry mustard, vinegar, and white sugar in a bowl. Set aside.

Add the pork and beans, kidney beans, and lima beans to the sauce. Mix well.

Fry bacon slices until crisp. Drain excess grease on a paper towel. Crumble or chop the bacon.

In the same pan, add the ground beef (hamburg) and cook until browned. Drain excess grease.

Add the chopped onions to the ground beef and cook until softened.

Combine the bacon, ground beef and onion mixture with the bean mixture.

Transfer the mixture to a casserole dish.

Bake in a preheated oven at 350°F (175°C) for 40 minutes, or until heated through and bubbly.