Yen’s mom used to have a shake and dessert stand when she lived in Rạch Giá, a port city in southwest Vietnam. Loaded to the brim with tropical fruits, toddy palm seeds, jellies, and coconut milk, this Thai-influenced shaved ice dessert was a bestseller—it’s a perfect dessert to enjoy on a sweltering summer day. While it can be hard to find fresh lychee and longan in the States, using the canned versions works pretty