Diners want healthier food. With first-ever recipe change, even Cup Noodles is trying to please them

Cup Noodles became a staple in college dorms because of its cost and convenience. If you had pocket change, boiling water and three minutes to spare, you could eat Japanese ramen — or at least an approximation of it — out of a handy foam cup.

But in the 45 years since Cup Noodles first appeared...