Prepare the pork. Add the pork to a mixing bowl and season with sweet paprika, salt, and pepper.
Heat a splash of olive oil in a medium-sized cooking pot over medium-high heat.
Sear the pork in the hot oil on all sides.
Add the onion, leek, and garlic. Cook until softened.
Add the shredded cabbage in batches. Season with salt to help the cabbage release its juices and cook until softened, stirring occasionally.
Pour in the wine and lemon juice.
Add the bay leaf and dried oregano and cook for 2 minutes uncovered.
Simmer covered over low heat for about 45 minutes or until pork is fork-tender.
Serve with freshly ground pepper and hot or sweet red pepper flakes on top. You can also serve it with a few drops of freshly squeezed lemon on top.