• Cook the Rice - Rinse the rice under cold water until the water runs clear. Drain and place in a rice cooker with 2 cups of water. Cook according to the rice cooker's instructions.

Cook the Beef

• In a bowl, mix the soy sauce, mirin, sake, and sugar. Stir until the sugar dissolves.
• Prepare the Beef In a large pan, heat a bit of oil over medium heat. Add the onion and cook until soft and translucent.
• Add the beef slices to the pan with the onions and pour over the sauce mixture. Cook for about 3-5 minutes, stirring occasionally, until the beef is just cooked through.

Cook the Egg

• In a separate pan, gently fry the eggs sunny side up until the whites are set but the yolks remain runny.

Toasting the Sesame Seeds

• Place the sesame seeds in a frying pan over medium heat, heat raw sesame seeds until golden brown and fragrant, stirring occasionally with a wooden spoon. Remove from heat and immediately transfer to a plate to cool completely

Assemble the Donburi

• Divide the cooked rice among four bowls. Top each with the beef and onion mixture.
• Place a fried egg on top of each bowl.
• Sprinkle with chopped spring onions and the toasted sesame Seeds.
• Serve with pickled ginger on the side ( optional).