MUJI Grain Tea: Black Bean & Rooibos is a naturally caffeine-free herbal tea that combines the deep, roasted aroma of black beans with the mild, smooth taste of rooibos. This balanced blend offers a gentle, comforting flavor that can be enjoyed hot or cold, any time of day. Made with carefully selected ingredients and no artificial additives, it is ideal for daily hydration and a calming tea break. Available in convenient sets of 5 or 10 packs for easy storage and regular use.muji Grain Tea: Black Bean & Rooibos set of 5/10