Combine with the vinegar and mustard in a small bowl, and whisk in the olive oil. Combine the meat and marinade in a non-reactive bowl, mix together with your hands and cover. Set aside for 2-3 hours.
A yogurt marinade isn’t traditional for pork souvlaki, but it acts as an effective tenderizer and doubles as a creamy, tangy sauce. Serve with rice, orzo pilaf or warmed pita bread. In Greece ...