Takaya Awata went from a college dropout to a billionaire selling bowls of chewy udon noodles across Japan. Now, he¡¯s betting the humble dish can become a global fast-food category alongside burgers, chicken and pizza, with the U.S. at the center of Toridoll Holdings¡¯ overseas ambitions.

¡°We want udon to become one of those major global categories,¡± Awata, 64, said in an interview at Toridoll¡¯s headquarters in Tokyo. The founder and chief executive officer wants Toridoll, with almost ?280 billion ($1.8 billion) in annual revenue, to join the trillion-yen ranks of the world¡¯s largest fast-food chains, primarily by growing its flagship Marugame Udon brand.

The challenge is scaling up the business and finding a way to win over consumers unfamiliar with a staple of no-frills Japanese cuisine. Unlike the better-known, thinner and yellowish ramen noodles typically served up in a seasoned bouillon, udon are thick, chewy white noodles that swim in a much simpler broth.