In a large slow cooker, place the potatoes in a single layer on the bottom of the cooking vessel.
Sprinkle the onions over the potatoes.
Place the beef in a single layer on top of the onions and potatoes. Place the two marrow bones in the meat. If you're adding a kishke, now would be the time to put it in the cooker.
Rinse the beans clean, checking for any stones or impurities. If using barley, do the same. Sprinkle the beans (raw or pre-soaked) and optional grains over the top of the meat. Place the three whole garlic cloves into the meat, evenly spaced. Sprinkle the whole mixture with the black pepper.
In a 4-cup container, whisk together the low sodium chicken broth, kosher salt, paprika, turmeric, cumin and cayenne.
Pour the liquid over the cholent. Add additional water until all of the beans and pieces of meat are covered. For us, it's usually another 1-2 cups of water in our slow cooker - it will vary. I usually add a bit more liquid if using grains, because they will soak it up.
Cover the slow cooker. Cook on low heat for 16 hours. Check occasionally as it's cooking; add additional water and stir a bit if it's looking too dry. Most cookers will auto-switch to warm when the cooking is complete. If yours doesn’t, set it to warm until ready to serve.
It will look a bit medieval when it's done cooking! Don't worry, just dig in and you'll see that it's perfectly cooked below the surface.
