A pair of new-to-me Japanese ingredients that I'm excited to work with:

Myoga (Zingiber mioga) is a close relative of common culinary ginger root (Zingiber officinale) that is prized for its edible flower buds. The buds are made up of scales that are crisp— like celery— with a refreshing ginger flavor that is characteristic of the genus. In Japan, myoga is commonly served raw in sushi, and as a condiment (yakumi) for cold dishes such as tofu and noodles. In other preparations, it is pickled or dipped in tempura batter and fried.

Ume (Prunus mume), often refered to as a type of plum, is a distinct species that is more closely related to apricots. Ume, with 4-5% acidity, are tarter than plums (1-2%), and contain astringent polyphenols, as well as glutamine, an amino acid. In Japan, ume are almost exclusively consumed in a preserved form. The most popular, umeboshi, is made with lactic acid fermentation, where the ripe yellowish plums are salted and weighted, then dyed with red shiso (akajiso) before being dried. Unripe ume are steeped for prolonged periods in shochu and sugar to make umeshu (ume liqueur). In this preparation, the flavor of the flesh, as well as the kernel, infuses the umeshu, which is then enjoyed straight up or in a cocktail. The liquor-soaked fruit (pictured above) is fragrant and addictive.