Add oil to a pan on medium heat, and then add ginger. Sauté until fragrant.
1 TBSP olive oil, 2 tsp minced ginger
Add ground meat and sauce until most of the pink is gone. Use the spatula to periodically break the large chunks of ground meat down so that you have a relatively uniform consistency at the end. Add the mushrooms if using and continue to sauté
2 lbs ground chicken or turkey, 1/4 cup diced mushrooms (optional)
Add the simmering sauce. Sauté. Keep using the spatula to break down the large chunks of ground meat as you continue to cook. Stir occasionally.
2 TBSP sake, 1 TBSP sugar, 4 TBSP soy sauce, 2 TBSP mirin
Continue to cook until most of the liquid has evaporated.
Serve on top of rice and topped with red pickled ginger strips, diced scallion, and a poached egg (or as desired).
beni shoga (red pickled ginger strips), diced scallions, poached egg