Just found your website last night, it's delightful! Very useful and I'll be using it a lot.
Just a quick question about Chambord: how long does it last and how can I tell if it has turned. There's so much conflicting info on the web and got two different answers from the nice people at my favorite liquor store.
So glad to see someone else enjoys a Manhattan!
Thanks for reading! Basically the higher the alcohol content, the longer the shelf life.
Over 40% (or 80 proof) has no expiration
30 to 39% would have an expiration of about 2 years
16 to 29% would have an expiration of about 1 year
Less than 15% would expire in about 6 months
In all cases it will last longer sealed in a cool dry place. The variation of proof is probably why you get different answers. Chambord for example is 33 proof (16.5% Alcohol) which I would put just at the 1 year mark on shelf-life.