Heat cooking oil in large pan over medium high heat. When oil is hot, add eggs and gently stir to cook eggs. When eggs are about 80% cooked through (still a little runny), remove from pan and set aside. Wipe pan clean.
Turn heat to high. Add a little more cooking oil to pan. When hot, add diced Spam to the pan. Cook until spam is browned on all sides. Add green onions, ginger and garlic, fry until fragrant. Add spinach, fry until softened. Add rice and the cooked eggs and toss to incorporate all ingredients throughout rice.
Let it all just sit still in the pan so that the grains of rice have a chance to heat up, about 1 minute. Toss so that the rice that is on the top now is on the bottom. Add cooking wine and soy sauce and stir again. Season with fresh ground pepper. Cook until every grain of rice is heated through.
Taste...salty enough? If not, add a little more soy. But since the spam is salty already, you might want to go light on the soy.