Homemade Steak Sauce

Ingredients (11)

• 4 tbsp unsalted butter
• ½ cup onion
• 2 cloves garlic
• 3 tbsp tomato paste
• 2 tbsp Dijon mustard
• ¼ cup Worcestershire sauce
• 2 tbsp Bourbon
• 2 tbsp apple cider vinegar
• 2 tbsp soy sauce
• 2 tbsp lemon juice
• 2 sprigs rosemary