Cook the Japanese noodles (i.e., Yakisoba or Odon) according to the package instructions. Set aside.
Heat a skillet to high heat on the stovetop. Add butter and wait until it melts to add the garlic. After about 20 seconds of cooking the garlic (you'll start to smell it), add the noodles to the pan. Mix all the ingredients together.
Pour soy sauce and mirin into a small bowl or measuring cup. Whisk to combine.
Pour over noodles and stir to mix it all up.
Heat until noodles are warmed through, then turn off heat.
Use a spatula to move noodles to a serving plate or bowl.
Video
Notes
If you do not have Japanese noodles on hand, you can make this dish with spaghetti or linguini
For this recipe, 1 package of noodles would be 10 oz of dry noodles
You can cook the noodles in advance and store in the fridge, but it may take longer for them to heat through on the stovetop. Add a few minutes of cooking time