Soak black beans overnight in water. Discard the soaking water before cooking.
In a pressure cooker, combine soaked beans, smoked ham hock, and bay leaves. Add enough water to cover beans by at least 3 inches, about 6 cups.
Bring to a boil, cover and lock the lid. Cook on medium-low heat for 45 minutes under pressure.
After 45 minutes, turn off heat and wait for the pressure to release before opening the lid.
Meanwhile, heat olive oil in a large sauté pan over medium heat. Sauté minced onion, chopped garlic, and parsley. Season with salt and pepper and cook until onions are translucent, about 10-15 minutes.
Add the sautéed onion mixture to the cooked beans and cook uncovered for an additional 20-30 minutes until beans are thickened.
Notes
Serve hot over white rice with chimichurri sauce for an authentic Brazilian experience. Beans are loaded with fiber and protein, making it a nutritious meal.