Ají de Lengua Recipe - Traditional Bolivian Beef Tongue Stew

Ingredients

• 2 lbs beef tongue, cleaned
• 1 large white onion, finely diced
• 4 cloves garlic, minced
• 2 medium tomatoes, peeled and finely chopped
• 1/2 cup ají amarillo paste (or substitute with yellow chili paste)
• 1/4 cup fresh parsley, finely chopped
• 1/4 cup fresh cilantro, finely chopped
• 1/2 cup beef stock
• 1/2 cup whole milk
• 1/4 cup heavy cream
• 1/4 cup extra virgin olive oil
• 2 bay leaves
• 1 tsp ground cumin
• 1 tsp smoked paprika
• 1/2 tsp freshly ground black pepper
• 1 tsp sea salt (plus more to taste)
• 1/2 cup green peas (fresh or frozen)
• 2 medium Yukon Gold potatoes, peeled and diced
• 1 tbsp white wine vinegar
• 1 tbsp unsalted butter