Place small amount of peanut oil in small fry pan. (Other oils may be substituted, I just happen to like the taste of peanut oil.) Heat on high; add egg and cook until light, breaking up egg into small pieces. Remove egg to bowl and set aside.
Prepare green onions as well as meat and dethaw mixed vegetables. In large fry pan, add peanut oil to lightly cover and heat to high. If using fresh garlic and ginger, cook in oil and then remove with slotted spoon. If using garlic powder and ground ginger, add to oil and dissolve.
Add cooked rice and stir to coat. Add oyster sauce and dry mustard; mix well. Add enough soy sauce to turn the rice to a little darker than the desired color.
Add egg, meat and vegetables and cook long enough to heat through. Add green onions during last 30 seconds of cooking. Remove rice to non-metallic bowl and add sesame oil; stir well to blend.