My grandpa survived on this hearty 4-ingredient staple during tough times and still asks for it every spring. It is incredibly cheap to throw together

Because this recipe is so pared down, small changes can make it feel entirely new while still honoring the spirit of a four-ingredient staple. For a slightly richer dish, swap the water for a light vegetable or chicken broth; just be mindful of the salt level and adjust at the end.

If you grew up with a smokier version, you can tuck a single smoked ham hock or a few slices of bacon on top of the potatoes before adding the cabbage—this technically adds an ingredient, but it transforms the broth into something reminiscent of old-fashioned farmhouse cooking. To keep the ingredient list tight but punch up flavor, lean on your pantry: a bay leaf or a teaspoon of caraway seeds can be added with the water, or a splash of apple cider vinegar stirred in at the end brightens the dish without making it fussy.

For a creamier texture, lightly mash some of the potatoes into the broth right in the slow cooker, creating a thicker, stew-like base around the cabbage. Leftovers can be turned into a rustic soup the next day by adding a bit more water or broth and gently simmering on the stovetop until heated through.

If you’re feeding a mixed table, serve this as the comforting vegetable centerpiece and let people add their own extras at the table: grated cheese, a knob of extra butter, or sliced cooked sausage on the side.