Boil the udon. Pre-mix the soy milk and mentsuyu. Cut the kimchi into bite sizes. Finely chop the green onions.
Drain and rinse the udon noodles under cold water. Pour the soy milk mentsuyu mix over the noodles and top them with kimchi and green onions. Drizzle ra-yu over it to finish.
Story Behind this Recipe
Since I love noodle dishes with soy-milk-based soup, I've tried making many dishes. But this is THE dish for cold noodles. This might seem like the ultimate lazy-person's recipe, but it's so good!
I've tried this with somen noodles, but the udon was a better match for some reason. It's so delicious, when all you really do is combine the soy milk with mentsuyu. We use "Somi" brand's mentsuyu at our house. If you have thin udon noodles, you can make this dish in 5 minutes. It's a super easy-to-make dish.