Maruchan Red Kitsune Udon
This cup instant udon only needs hot water and a wait of 5 minutes to be ready to eat. Topped with slightly sweet deep-fried tofu, it's so popular in Japan that it's hard to find anyone who doesn't know about it.
I fell in love with this product after seeing the commercial! Honestly, I could eat 10 bowls and still not get tired of it.