Cottage Pie

Ingredients

• ["1 lb ground beef (whatever fat content you want, i used 93% lean)", "2-3 tablespoons concentrated tube tomato paste", "2 cups beef or vegetable broth", "2 large carrots minced", "1 regular yellow onion minced", "2-3 stalks celery minced", "2 tbsp garlic minced", "cornstarch or flour to thicken (few tbsp)", "3 \"shakes\"" worcestershire sauce""