This recipe calls for pumpkin and sweet potatoes to add a dash of fall flavor. The nuns also make a variation using brown sugar and walnuts. Mushi-pan Steamed Cake - Nun's Cookbook | NHK WORLD-JAPAN ...

The Jigoku-mushi Purin, or “hell-steamed custard pudding,” is so devilishly delicious that it topped the list in a nationwide survey on which local creme caramels people most want to buy.