What kind of bean is fennel in Kong Yiji?

According to the query of Aiwen Knowledge Network, fennel beans are foods made from broad beans with various spices. In Kong Yiji, Lu Xun described four ways of writing fennel when Kong Yiji ate fennel beans, so it was widely circulated among the people. Anise bean is a famous traditional snack in Shaoxing, Zhejiang Province, which belongs to folk leisure food and is often drunk in urban and rural hotels all the year round.