Preparation time: 20 minutes Cooking time: 50 minutes Servings: 6 Ingredients 4 tbsp (0.25 cup) olive oil 16 oz (454 g) grass-fed ground beef 0.5 cup celery, chopped (approx. 2.6 oz / 75 g) 0.25 cup yellow onion, chopped (approx. 1.4 oz / 40 g) 3 garlic cloves, minced...













