The traditional decanter is made of glass, and the wine is poured into it, and it’s allowed to settle for 30 mins. This allows the wine to open up and helps the wine to attain its full potential. The two main disadvantages are: It’s time-consuming
You can’t pour the wine in the decanter back into the bottle; you have to either throw it away or consume the whole thing
Due to these disadvantages, most of them prefer aerators over traditional decanters.