Slow cooking produces flavorful sauces. Water used in the cooking process blends with meat and vegetable juices to form a rich and complex broth. This is one reason that slow cooked meals can be so flexible. Time, moisture and wholesome ingredients often result in spectacular blended flavors.
You can opt for using convenient condensed or packaged soup mixes as flavoring agents or branch out. Try using wine, beer, liquor, soy sauce or tomato products in your slow cooker recipes. Add an onion, some celery, carrots, turnips and a couple of garlic cloves. Suddenly you have ambrosia in the making. The alchemy that results in great slow cooker sauces isn't courtesy of any single ingredient. The magic of slow cooking is that the recipe ingredients have time to incorporate, making beautiful, finished dishes.