Peel and slice the onions finely.
Peel the garlic cloves and crush them.
Crush the Juniper berries with a pestle or mortar or use another heavy item.
Assemble the remaining ingredients( mustard, thyme, oregano, paprika powder, cayenne pepper, salt and pepper) for the marinade and place them in a large shallow bowl. With a spoon stir the ingredients to achieve a smooth mass.
Add the pork steaks to the bowl and rub the marinade in. Store the marinated pork chops in an airtight container in the fridge. ( I like to keep them in a zip lock bag, to ensure the pork steaks are fully covered in the marinade.)
Leave to marinate for at least 24-48 hours. Remove the meat from the fridge at least 1 hour before grilling.
Oil your grill plate before making the fire.
With the back of a spoon remove the onions from the pork steaks. You can fry them in a pan on the stove or place them in some foil to cook over the bbq.
Grill each steak for about 10-15 minutes (exact cooking time depends on the thickness of the steak and the heat of the grill)
Serve with a side salad and white crusty bread. If you like you can place the cooked onions on top of the steaks.