Traditionally, yakisoba would be served with cabbage, but Brussels are a great replacement, offering their own distinct flavor and vivid color. Because you're shredding the Brussels sprouts, there's no need to core them. My secret is to simply use the Cuisinart shredder. I pop the Brussels in one by one and save myself all the work of cutting. This recipe is a riff on one our dear friend Jane Hashimawari of Ippai PDX shared with us. I almost always top with a bit of Kewpie mayonnaise because it takes it to 100.