no official recipe, but ........saute 1 chopped large onion and 1.5 lbs hamburger in some grapeseed oil, (it was 9% lean, needed oil) add 2 cans tomato paste, some apple cider or coconut vinegar, some organic unsulphered molasses, a tsp or so of cumin, a couple spoons of crushed garlic, a tblsp of chili powder- or more, some red pepper flakes, tsp or so smoked paprika, simmer till bubbly and hot, keep checking for flavor- should be spicy, slightly sweet and just a tad tart. Makes enough for an army- or one 15 yr old with a hollow leg. BTW- I made enough so that I could freeze some, but Mr hollow leg is eating me out of house and home. I have one teenager for rent- anyone interested? (warning- allergic to gluten, dairy, corn & corn syrup, soy, nitrites/nitrates, food colors, food dyes, artificial flavorants, petroleum based additives, bananas, raw apples, and some days- baths!)