Provided is a powdered composition for preparing a smoothie beverage by mixing the same with water, characterized by containing at least one selected from the group consisting of vegetable ground materials, vegetable juice powders, fruit ground materials, and fruit juice powders, and containing an insoluble dietary fiber, and a water-soluble dietary fiber and a smoothie beverage prepared by mixing the powdered composition with water.本發明係提供一種粉末狀組成物以及將前述粉末狀組成物與水混合調製而成之思慕昔狀飲料,該粉末狀組成物係與水混合以調製思慕昔狀飲料者,且其特徵在於含有:選自由蔬菜粉碎物、蔬菜汁的乾燥粉末、果實粉碎物及果汁的乾燥粉末所構成群組中之至少1種,不溶性食物纖維,及水溶性食物纖維。
