The invention relates to a mixing device with an input container that is configured for receiving a product that includes a fluid component and a second component. A whipper with a conical whipper surface has an axis is configured for aerating and frothing the product. The whipper surface extends between first and second end portions, with the first end portion having a smaller diameter than the second end portion. The whipper surface is preferably oriented at a surface angle to the axis of about between 5.degree. and 65.degree.. A motor is in driving association with the whipper for rotating the whipper about the axis at a speed sufficient for aerating and frothing the product. A product exit conduit is disposed downstream of the whipper and is configured for dispensing the product of the fluid and second components.