Decanting wine removes sediments and aerates the wine to improve taste. There are varying levels of aggressiveness when aerating wine based on how bitter it is and time available. The least aggressive is letting wine sit in the bottle, while the most aggressive is blending it in a blender. A commercial aerator like a Vinturi is recommended for typical wines to effectively aerate them for a smoother taste. Decanting with an aerator or filter is suggested for older wines.