Disclosed are a starting material, and a manufacturing method therefor, which starting material contains a lipophilic component with flavors or odors typical of pungent components, such as capsaicin, and bitter components, such as turmeric extract, and which is able to effectively suppress the taste andor odor of the lipophilic component, while also not causing the ingredients to separate. The flotation apparatus F includes a circulating device for circulating the liquid raw material by raising and then lowering the liquid raw material in the tank 1, an air supply tube 4 for supplying air into the tank 1, and an agitating member 5 provided in the tank 1 for taking the air from the air supply tube 4 and agitating the air for forming the air into fine bubbles. The heating device includes a one-piece housing having a mounting flange portion and a first leg portion positioned substantially parallel to and spaced apart from a second leg portion. Furthermore, third air supplying arrangement may be provided for supplying air toward the casing. The autocorrelation value is compared to a predetermined constant. Further, in manufacturing the wet type friction member, a roll, an ultrasonic wave transmitter, a vacuuming apparatus on the like is used.