You can make the recipe much simpler by omitting some of the ingredients, but don’t skip out on the sauces, noodles, cabbage, or egg. You can also add whatever else you want. I typically make vegetarian variants that don’t use fish flakes or bacon. And dried yakisoba noodles are adequate; I usually go with Sapporo Ichiban Chow Mein (picture of the packaging, it says yakisoba in Japanese)
Probably: “ava”