I think I once saw a picture of a bunch of decanters, which had a label (hanging from a chain) around them on which the specifics of the contents was written. This item could be useful in tastings where several Ports are being served.
So far, I haven't been able to find this kind of labels for my decanters. The only ones I've been able to find, are the ones which are more for decoration (and they are not writable, because these labels just state terms like "Port", "Sherry", "Brandy", "Whisky" et cetera.
Thanks in advance for any reactions!