Heat clarified butter in a large pan over medium-high heat. Add minced pork and stir continuously until crumbly and cooked through, about 5-7 minutes (internal temperature 63°C / 145°F). Season with salt, pepper, and paprika.
Finely chop the onion, add to the pan, and stir for 1-2 minutes.
Wash and halve the bell peppers, cut into strips, and add to the pan.
Peel the cucumber, cut in half, and scrape out the seeds with a teaspoon. Cut into 0.5 cm thick slices and add to the pan.
Stir for 2-3 minutes. Pour in the vegetable stock and add the rosemary. Simmer over medium heat for about 8 minutes.