Jo's Slow Cooked Chili Ingredients: 1 medium onion, chopped 2 16-oz cans kidney beans, drained and rinsed 2 lb ground beef 2 15-oz cans diced tomatoes, undrained 1 15-oz can tomato sauce 2 cloves minced garlic 2 T chili powder Pepper to taste Directions: In a skillet, brown the ground beef and onions; drain. Transfer to a slow cooker. Add the rest of the ingredients and stir to combine. Cover and cook on low for 8 to 10 hours or on high for 3 to 4 hours. Serve with shredded cheddar cheese, sour cream, and corn chips. Which of the following actions should the cook take first when following the recipe?