Prepare the Ingredients: Shred half a medium-sized red cabbage into thin strips. Slice one medium onion and chop one firm apple into small cubes. Gather your sugar, white vinegar, salt, and pepper for use.

Sauté Onions and Apples: Heat a large Dutch oven over medium heat and add a splash of oil. Sauté sliced onions and chopped apples for about 5 minutes until onions are translucent and fragrant.

Combine Cabbage and Seasonings: Add the shredded red cabbage, sugar, white vinegar, salt, and pepper. Stir well to coat the cabbage with the mixture.

Simmer Until Tender: Cover the Dutch oven, reduce heat to low, and let simmer for about 1 hour, stirring occasionally until the cabbage is tender but retains slight crunch.

Serve or Chill: Remove from heat and serve warm or let cool before refrigerating. The flavors deepen over time.