Simplify the following text for a Grade 4 native English-speaking person.
Original: HÅ tÅ is a popular regional dish originating from Yamanashi , Japan made by stewing flat udon noodles and vegetables in miso soup .
Simplified: HÅ tÅ is a noodle from Yamanashi , Japan . It is made by stewing flat udon noodles and vegetables in miso taste soup .