A tip to making the beef tender is to avoid overcooking. When the red meat has just turned brown, the beef will be tender and delicious.
If the shirataki noodles are not available, leave them out and slightly increase the amount of other vegetables.
If you’re worried about the amount of fat, you can lightly parboil the beef to reduce the excess fat and any unwanted flavor. Make sure to also check out our previous gyudon recipe.