Sometimes, you have to stack as many signs of summer onto your product as possible. Snack producer Yamayoshi is celebrating the hotter months of the year with a special-edition potato chip tied to Japan's southern islands. Their Okinawa salt wasabi beef offering hit store shelves at the start of last week and, as the name implies, adds a tropical twist to their signature spicy, beef-flavored chip. This limited-run creation (¥220) is only found in convenience stores, and is around for the next two months.