Get ready for the heartiest and richest pot roast you’ve ever made. The addition of Guinness to this traditional recipe makes for the perfect St. Patty’s Day dish—but it’s also just as delicious served on a cold winter day. Guinness’s dark, rich flavor adds great depth, but it also keeps everything super tender. Feel free to substitute your favorite stout beer instead. See 10 other recipes you need to make with beer this St. Patrick’s Day.  Crock Pot Guinness Pot Roast Serves 4. Double recipe to feed 8. Ingredients 1 tbsp olive oil ~2.5 pounds boneless roast 2 tsp salt, divided 2 tsp black pepper, divided 1/2 yellow onion 1-2 carrots, peeled and diced 1/2 pound mushrooms, sliced 1 pound red potatoes, scrubbed and halved 2 garlic cloves, minced 1 tbsp fresh rosemary 2 tbsp tomato paste 1 tbsp Worcestershire sauce 1 cup Guinness 1 cup beef stock Directions In a…