Genmaicha has a rich, aromatic fragrance, combining the beautiful color of green tea with the dual nutrients of roasted brown rice and green tea, making it highly popular among the Japanese. Genmai, or brown rice, is rich in fiber and beneficial for the digestive system, which is welcomed by modern people. In Japan, besides being consumed as tea, genmai is also regarded as an effective weight-loss drink, especially favored by young women. Green tea, rich in tannins, has antioxidant and antibacterial effects and is believed by the Japanese to help prevent arteriosclerosis and improve skin beauty. Therefore, genmaicha, which combines stomach-nourishing, intestine-friendly genmai with weight-loss and beauty-enhancing green tea, is an affordable and healthy beverage.

It is said that the Japanese began drinking genmaicha before World War II. During celebrations, people would break rice cakes as part of the ritual, but these rice cakes would go to waste afterward. A tea merchant found this regrettable and decided to roast these rice cakes and mix them with tea leaves for drinking—this is the origin of genmaicha. Traditional genmaicha consists of half tea leaves and half roasted brown rice. Today, in addition to genmaicha that requires brewing, ready-to-drink bottled versions are widely available. According to reports from the "Medical Health Information" website, genmaicha can help suppress excitement, relieve mental stress, and is thus valued for treating insomnia and improving mental health symptoms. Additionally, genmaicha has blood pressure and lipid-lowering effects and promotes metabolism, making it recently recognized as a food that can help improve lifestyle-related diseases. However, more importantly, due to its low calorie content and rich vitamins such as C, B2, and B6, many women regard it as an ideal weight-loss food.