Fried Rice with Vegetables

2 tablespoons butter
1 small white onion, sliced
2 carrots, sliced
2 stalks, celery, sliced
1 cup sliced mushrooms
3 to 4 cups undercooked long grain rice
2 dashes cayenne pepper
2 to 4 ounces Tamari soy sauce to taste
1 egg

Place butter in skillet on high heat. Stir fry vegetables until onion becomes translucent. Add undercooked long grain rice and stir fry. Add pepper and continue stir frying until rice crackles. Add soy sauce and let cook. Just before serving, stir in egg. Serves 6