A high-quality blender is an indispensable tool in any kitchen. The best blenders quickly puree ingredients into a smooth consistency. Personal blenders are great and inexpensive if you plan to just make simple things like single-serve smoothies. A countertop blender is more versatile, and can be used for everything from smoothies to nut butters to sauces. A new trend is vacuum blending in which air is removed from the jar before blending to minimize oxidation.