Genmaicha, also known as 'popcorn tea' because of its popcorn-like flavor and bits of puffed brown rice, is a classic Japanese comfort tea. It gained wide usage during World War II, when tea rations required many people to spread their tea supplies thin with toasted brown rice as a filler, and it remains popular today. It has a grainy, toasty, sweet, grassy flavor and lower caffeine
Genmaimatcha is a newer type of Japanese green tea. It is a blend of Matcha and Genmaicha. Its flavor is creamier and fuller than Genmaicha. It also has a higher caffeine level and a more opaque brewed appearance due to the Matcha.