A couple of years ago, Pokémon introduced a new monster: Poltchageist, a “Grass/Ghost type” with special abilities in “hospitality” and being “heatproof.” It is wily and homicidal; it is also matcha. Sure—why not? Matcha, a special preparation of green tea, is already everywhere else. It’s in candy and restaurant desserts and ultra-firming eye cream and Frappuccinos and a pretty foul-sounding martini . Loacker, the 100-year-old Italian company that makes those Quadratini cookies, has introduced