For the cabbage, heat butter in a large pot set over medium heat. Add onions and cabbage and cook until just tender, about 3-4 minutes. Add remaining cabbage ingredients and bring to a simmer. Reduce heat to medium-low, cover, and cook 20 minutes, or until cabbage is tender.
At this point you can start the pork by heating the oil in a large skillet set over medium-high heat. Combine flour and sage on a sided plate. Season pork with salt and pepper, and then dredge in flour, shaking off the excess. Add to skillet and cook 3-4 minutes per side, or until cooked through.
When cabbage is ready season to taste and then place a spoonful on each of 4 dinner plates. Place to pork chop on top of cabbage and serve.