In a bowl, combine red wine vinegar, olive oil, salt, garlic, brown sugar, oregano, and paprika.
Add your chosen protein and coat well with the marinade.
Cover and marinate for at least 20 minutes, preferably overnight for deeper flavor.
Preheat the barbecue to medium–high heat.
Grill for about 10–12 minutes, turning halfway through and basting with leftover marinade.
Once cooked, remove from heat and rest for 5–6 minutes before serving.
This Portuguese BBQ Marinade Recipe works beautifully with grilled meats and delivers juicy, flavorful results every time.