These easy baked donuts benefit from matcha in the batter and in the glaze, where it lends beautiful color. If you’re unfamiliar with matcha, it’s high-quality green tea that’s ground into a fine powder. Matcha has a powerfully earthy, bitter flavor, so a little goes a long way. For the most vibrant color, seek out a reputable brand (some lower-quality brands have a dull, olive-green color). We recommend Maeda-en Matcha Green Tea Powder, culinary quality; Aiya Matcha, ceremonial grade; or Eden Matcha. We love the color and flavor of the coconut and goji berry garnishes; if you can’t find goji berries, you can use dried cranberries instead.