Wash the coriander, shake dry and finely chop the upper 1/3 of the stems. Peel garlic and ginger and chop finely. Mix 50 ml oil, coriander, garlic and ginger. Dab lamb chops dry and place in the marinade.
Marinate the meat for about 30 minutes at room temperature.
Remove the chops from the marinade and season with salt and pepper. Place the meat on a baking tray and bake in a preheated oven (electric cooker: 225 °C/ convection oven: 200 °C/ gas: see manufacturer) for approx. 20 minutes.
Peel the potatoes and, depending on their size, halve or quarter them. Heat 1 tablespoon of oil in a frying pan. Fry the potatoes for 20-25 minutes, turning regularly until golden brown. Season with salt and pepper.
Remove meat from the oven and let it rest for about 10 minutes, keeping it warm. Deglaze the roast with 150 ml water, dissolve and pour into a pot. Let the sauce simmer for about 5 minutes, if necessary thicken with a little sauce thickener.
Clean, wash and shake dry the rocket. Cut squares between the bones. Arrange lamb chops, rocket and potatoes on plates and drizzle with some sauce. Add the rest of the sauce.