Both Shiruko and Zenzai are
"sweet red-bean soup," in which toasted mochi are served. The sweet soup is made from
an, a paste made from
azuki beans. When the soup is made with the thin and pureed
koshi-an, the result is
Shiruko, and when the thicker and chunkier
tsubu-an is used, one speaks of
Zenzai instead of
shiruko.
[Shiruko]
Both are delicious on cold winter days. Shiruko is considered as an elegant dessert and served in Japanese-style tearooms (
kanmi-dokoro).
Both
can be bought ready-made in supermarkets.