Rough chop one onion and evenly spread it on bottom of Instant Pot.
Chop onion and rough chop the cabbage and place into a bowl. Set aside.
In a Large Measuring Cup, or bowl, add all sauce ingredients (diced tomatoes w/ juice, crushed tomatoes, tomato sauce, coconut oil (or Crisco), mined garlic, Sour Salt (OR juice from 2 lemons OR 2 teaspoons True Lemon Crystals), brown sugar substitute, salt and pepper) and whisk together well.
Sour Salt gives a nice sour flavor. Sour Salt is not a salt. It is just citric acid. Sour Salt adds an authentic Old World flavor to the recipe. I recommend Lieber's Sour Salt and Geffen Sour Salt.
Pro Tip:If you prefer a sour sauce and not a sweet and sour sauce, simply leave out the brown sugar. You can also adjust the amount of Sour Salt used by adding more to increase the sourness of the sauce.Food Service Gloves are great to use for mixing up the meat so that your hands stay clean and you can quickly touch the other items.
Ground Turkey or Ground Beef
Ground turkey is less colorful and flavorful than ground beef, so a bit of Worcestershire sauce will “beef” up the flavor. Ground turkey is also very wet. Therefore, a bit of xanthan gum will bind the meatballs and when you open the pot, you’ll actually see nice whole meatballs.
Pro Tip: Skip the xanthan gum if using ground beef and reduce Worcestershire sauce to two teaspoons.
Make Riced Cauliflower
No need to buy riced cauliflower as it is simple to make.
Cut about 1/4 of a cauliflower into large chunks and toss into Large Food Processor. Push the pulse button just one second at a time, until the chunks of cauliflower have turned into riced cauliflower.
Layering Cabbage and Onions
The first layer of just onions acts as a buffer, a barrier between the bottom of the pot and the meatballs. This way, the meatballs are not directly above the heating element on the bottom of the pot and ensures the pot will easily come to pressure.
As the bottom of the pot heats up pretty quickly, the onions will start cooking and break down, which will add nice flavor to the sauce.
The layering of the rest of the onions and the cabbage will create various textures to the finished dish, which is nice. Some of the cabbage will disintegrate, some will be very soft and the rest will be less soft. All will be nicely cooked.
Very Full Pot is Okay!
Cabbage and onions are very bulky and to start out and will take up a lot of room in the pot. Don't worry about filling up the pot to the top.
The cabbage and onions will quickly shrink down (much of it before even reaching pressure) to a fraction of their raw self.