1. Peas Put the peas, butter and lemon juice in a microwave-proof bowl. Microwave for 2 minutes on high and stir well.
2. Add the mint, mix then crumble the feta cheese over. Mix well and season with salt and freshly ground pepper. Set aside.
3. Burgers Heat the oil in a pan and fry the Kassler chops until golden brown and slightly crispy on the edges. Remove from the pan and set aside.