Sloppy Joes — With a secret ingredient

Sloppy Joes with Red Cabbage

1 pound ham­burg­er (more or less okay)  
1 tbsp oil
1/4 to 1/2 head red cab­bage, grat­ed
1 onion, chopped
3/4 cup toma­to ketchup
2 tbsp vine­gar
2 tbsp Worces­ter­shire sauce
1/4 tsp cin­na­mon
1 tsp papri­ka
1 tsp chili pow­der
1/4 tsp cloves (or more)
salt and pep­per to taste

Brown the ham­burg­er in oil, chop­ping and stir­ring it with a plas­tic spat­u­la, until no red remains.
Add all the oth­er ingre­di­ents. Stir and bring to a sim­mer. A lit­tle water may be added if it is too thick. Keep at a sim­mer for 20 to 30 min­utes — with or with­out a lid.
Serve on buns.

Note: All ingre­di­ent amounts can be adjust­ed to your per­son­al taste. (I tend to mea­sure by eye.) The best part of this recipe? No one has ever guessed my secret ingre­di­ent!