Skewer-less Greek Souvlaki - Inspired Cuisine

Ingredients

• 1 whole pork tenderloin (about 1 1/2 lbs, trimmed)
• kosher salt and freshly ground black pepper
• drizzle of olive oil
• 3 tbsp white wine vinegar
• 5 tbsp olive oil
• 6 cloves grated garlic
• 1 tsp Dijon mustard
• 2 tsp dried oregano flakes
• 1 sprig finely chopped fresh rosemary
• 1 tsp sweet Hungarian paprika
• 3/4 tsp fresh ground black pepper
• 1 1/2 tsp kosher salt
• 1 medium lemon
• 1/2 medium red onion (quartered)