On The Belgium Beer Company‘s website it says that Kwak is:
A spiced Flemish amber beer that has a very unusual glass. Pauwel Kwak is a Belgian beer brewed by Bosteels in Buggenhout. It is an amber beer, which is relatively strong at 8.4% ABV. It gets its name from an 18th century innkeeper and brewer.
I first sampled this exquisite tipple in a small and extremely excellent North Walian Tapas Bar by the name of Y Delyn. You may know it.
On first taste I got a sweet, hoppy, liquorice flavour. I then noticed the almost chewy quality of the beer. Finally, I noticed the ABV of the beer. It comes in at a whopping 8.4%, so be careful! I’ve not yet tried it in the rather unusual glass. It looks like a foot of ale, with a rounded bottom and a wooden stand.
Kwak is quite hard to come by with your weekly shopping – you certainly can’t buy it in Sainsbury’s! The last time I enjoyed some, I was on holiday in North Yorkshire and I found it on a day trip to York, up by the Minster. If you’re not in York, I’m sure that someone in your locality will stock it, if not there’s always mail order.