Clean, wash and slice the red cabbage. Cut red cabbage into strips from the stalk. Peel and chop onion.
Heat the lard in a large pot. Sauté onion and red cabbage for 4-5 minutes. Deglaze with wine and 3 tbsp vinegar. Stir in 1 tsp salt, 1 tbsp sugar, bay leaf, cinnamon stick and juniper. Bring everything to the boil, cover and stew for about 30 minutes.
Peel, quarter, core and dice the apple. Add to the cabbage and continue to braise for about 30 minutes, stirring occasionally.
If necessary, boil down the cabbage liquid a little or mix starch and 1 tablespoon of water and bind the cabbage slightly. Stir in currant jelly. Season the cabbage with salt, pepper, sugar and vinegar.