Mix the ingredients together for the sauce in a small bowl or mason jar.
2 Tbsp. soy sauce, 1 Tbsp. brown sugar, 1 1/2 Tbsp. mirin, 1 tsp. fresh ginger, minced, 1 tsp. hoisin, 1 tsp. fish sauce, 1 Tbsp. Sriracha (optional)
Heat sesame oil and vegetable oil in a large nonstick skillet. Add the onion and garlic and cook; stirring, until fragrant, ~5 minutes.
1 Tbsp. sesame oil, 1 Tbsp. vegetable oil, 1/2 large white onion, diced small, 2 tsp. garlic, minced (about 2 cloves)
Add ground beef and cook, breaking it up with a wooden spoon until meat is no longer pink.
1 lb. ground beef
Add the sauce and green onions and bring to a simmer. Taste and season with salt and pepper, as desired.
2 green onions, chopped
Remove from heat and serve immediately with noodles of choice. (We went with egg noodles). Garnish with more green onions and sesame seeds if desired.
noodles of choice (ramen noodles, rice noodles, egg noodles, etc.), finely sliced green onions, toasted sesame seeds, red pepper flakes