Here's a convenient must-have, all-year-round fruit mix that you can use to make perfect homemade smoothies or use as toppings. Wyman's Fresh Frozen Mixed Berries is a healthy mix of four delicious fruits: wild blueberries, strawberries, raspberries, and blackberries that are a good source of vitamin C. This mix is a good option for those who are sensitive to gluten and comes in a reusable bag to maintain freshness.