This marinade recipe come from Rick Stein, From Venice to Istanbul. He recommends using it for cubed pork shoulder on skewers (souvlaki) but we also like it on pork tenderloin. Recipe is enough for two tenderloins. Marinade for 1-2 hours then grill.
Souvlaki-Style Marinade
30ml fresh squeezed lemon juice
2 tbsp olive oil
2 tsp dried oregano
1 tsp smoked paprika
1/2 tsp each ground cumin, cayenne, and salt
1 garlic clove, grated