Japanese Chicken Donburi | Food Stuff

Ingredients

• 6 cups baby spinach leaves (about 6 oz) rinsed, drained
• 1/2 pound boned skinned chicken breast rinsed and cut into ¼" strips
• 6 cups cooked rice
• 5 large eggs (yolks and whites separated)
• 1 cup fat-skimmed chicken broth
• 2 tablespoons minced fresh ginger
• 1 onion - (6 oz) peeled, and
• 1/4 cup diced Roma tomato
• 1 cup salad oil
• 2 tablespoons Soy sauce
• 4 tablespoons sugar