To make a chicken stir fry you'll need bite sized pieces of chicken breast or thighs. The best vegetables to try are bell peppers of any color. They hold up well to high heat cooking. Broccoli, onions, carrots, corn, mushrooms and snow peas are also great tasting. If you prefer a beef stir fry, try a top sirloin that's been thinly sliced. A great way to serve it is with some hot cooked white rice or noodles, sprinkled with sesame seeds and sliced green onions.