A download tutorial blender pdf blender consists of a blender jar with a rotating metal blade at the bottom, powered by an electric motor in the base. Some powerful models can also crush ice. Glass blenders are heavier and more stable. Plastic is prone to scratching and absorbing the smell of blended food.
Stainless steel is preferred for its looks, but limits visibility of the food as it is blended. 16 speed settings, but having more choices in speed settings is not an indication of increased utility for all users. The blending container is generally shaped in a way that encourages material to circulate through the blades, rather than simply spinning around. The container rests upon a base that contains a motor for turning the blade assembly and has controls on its surface. Most modern blenders offer a number of possible speeds. Low-powered blenders require the addition of some liquid to operate correctly. In these blenders, the liquid helps move the solids around the jar, bringing them in contact with the blades.
The blades create a whirlpool effect which moves solids from top to bottom, ensuring even contact with the blade. This creates a homogeneous mixture. High-powered blenders are capable of milling grains and crushing ice without such assistance. Immersion blenders are convenient for homogenizing volumes that are too large to fit in the bowl of a stationary blender or, as in the case of soups, are too hot to be safely poured into the bowl. The operation of an immersion blender requires that the user hold down a switch for as long as the blades operate, which can be tiresome for the user. Handheld blenders are ideal for small and specific tasks, but do not have as many uses as a countertop blender. Countertop blenders are designed to mix, purée, and chop food.