In a small bowl combine water, mirin ,light soy sauce, brown sugar and dashi. Stir well to incorporate. Set aside.
100 ml mirin or cooking sake, 60 ml light soy sauce, 2 tbsp brown sugar, ¼ tsp dashi powder - store bought, 150 ml water
Heat wok or pan over medium heat. When hot enough pour the sauce. Let simmer for 2 minutes.
Add beef then stir and simmer for 2 minutes. Tip in onion, grated ginger then mix to incorporate. Cover wok with lid and simmer for 5 minutes until beef and onion are soft and tender.
300 grams beef loin, 1 medium white onion, 1 tbsp grated ginger
Remove from heat then top on steamed rice in a bowl and place poached egg on top. Garnish with spring onions. Serve and enjoy. Bon appetit!
4 cups steamed rice, 4 medium eggs poached, 2 tbsp spring onion