Wine decanters are designed primarily to expose wine to air and, when needed, separate it from sediment. Whisky decanters are designed for attractive storage and serving and typically include a stopper to limit evaporation and keep dust out.
Choose the decanter based on what you plan to serve. Young red wines benefit from wider bases that increase air exposure, while older wines may be better suited to gentler decanting. For whisky and spirits, look for a well-fitting stopper and a size that works with your typical bottle.
No, but a decanter can be useful for young, tannic wines that benefit from aeration and for older wines that contain sediment. It also provides an attractive way to present wine at the table.
Rinse the decanter soon after use and clean it with products designed for glassware. For narrow or unusually shaped decanters, flexible brushes or stainless steel cleaning beads can help remove residue from areas that are difficult to reach.