Gyudon

• 1 onion thinly sliced
• 1 green onion/scallion
• 1 lb thinly sliced beef

For the Sauce

• 2 cups stock (dashi, chicken or veg)
• 4 Tbsp sake (substitute with dry sherry or Chinese rice wine, or use water for a non-alcohol version)
• 3 Tbsp soy sauce
• 2 Tbsp sugar

Neutral oil (such as vegetable or canola oil) 2 medium onions (very thinly sliced) 1 pound very thinly sliced beef (fatty beef chuck or ribeye) 2 teaspoons sugar 2 tablespoons mirin 2 tablespoons soy sauce 1 cup dashi stock (can also substitute beef or chicken stock) 4 eggs 4 cups cooked white rice (short grain or medium grain preferred) 1 scallion (chopped) 2 teaspoons toasted sesame seeds (optional)