‘ZENZAI’ is a traditional Japanese dessert soup made with azuki beans. 
But, In okinawa, ‘ZENZAI’ is shaved ice.
Do not order it to warm you up !
The sweet red beans under the ice go well with the fluffy ice.
If you think azuki beans are too sweet, we recommend melting the ice while eating.
https://gigazine.net/gsc_news/en/20140717-aragaki-zenzai/