Japanese Beef and Onsen Egg | Marion's Kitchen

Name: Japanese Beef and Onsen Egg | Marion's Kitchen
Prep time: 70 min
Cook time: 35 min
Total time: 105 min
Yield: 4
Ingredients: 400g (14 oz) scotch fillet (rib eye) steak; 4 eggs, room temperature; 1 tbsp vegetable oil; 1onion, sliced; 4 cups steamed rice to serve; pickled ginger to serve; 4 tbsp finely sliced spring onion; Sauce:; 2 tbsp sake; 2 tbsp mirin; 2 tbsp soy sauce; 2 tbsp brown sugar