We used a frozen stir fry mixture from the grocery store. They make different varieties: sugar snap pea stir-fry and broccoli stir-fry. The sugar snap pea stir-fry mixture is the one we used in this recipe. It has a variety of vegetables including: sugar snap peas, broccoli, green beans, yellow squash, red peppers, carrots, yellow peppers, and water chestnuts. Frozen vegetables are frozen at the peak of freshness so are perfect to use without losing any nutrients!