Heat a wok & coat with oil. Add onion & carrot & saute for 3 minutes till onion is slightly browned. Add crumbled tofu & the remaining ingredients. Stirring constantly, saute over medium low heat for a bout 5 minutes, or until the tofu is light & dry. Variations: Add 1/4 c of any of the following: parboiled green peas; shiitake mushrooms; diced bamboo shoots. Also try adding 1 ts grated ginger. Shurtleff & Aoyagi, "The Book of Tofu"