Posted 07 February 2018
There’s a common assumption that, unlike wine, whisky doesn’t change once bottled. But, if you’ve ever sampled a bottle that’s been opened for a long period of time (especially if the liquid level is quite low in the bottle), you’ll know that this is not the whole story. Oxidisation, will have an effect on your whisky. A completely sealed bottle which is still airtight, should remain entirely constant - all other things (temperature and light exposure etc) being equal. However, if the closure is not perfect, and many degrade over time, then slow oxidisation of the liquid is entirely possible. This occurrence has been named ‘Old Bottle Effect’ or OBE.