This gyoza with a flaky croissant crust is so sought after it took a year for our order to arrive. We’ve tried a lot of gyoza in Japan, ranging from Wasabeef wasabi gyoza through to varieties covered in gold leaf and ones made by former prisoners in Kabukicho. However, there’s one type of gyoza that’s alluded us since we heard about it a year ago, and it’s caused such a sensation around Japan that 4,000 boxes of them have been known to sell out in 30 minutes. Called Croissant Gyoza, this very special type of pot sticker comes from Tareya...