KYOTO--A durable alien ground cherry species has invaded Kyoto Prefecture and is choking the life out of a pricey “azuki” bean that is ... of “tsubuan” azuki paste, and other products.

It features 15 or so items, such as the “ohagi” ball made of rice and adzuki bean paste as well as the “ikinari dango” dumpling featuring sweet potato. They all use crystalline fructose ...