iF you’re coming to Belgium and you want niche, then make your appointment here
http://users.telenet.be/sintsixtus/sintsixtus/eng/brouwerij.htm
You really don’t want to see that this stuff sells for in the US. It’s good, really good, but not that good enough for those prices
After a long afternoon / evening in a lovely little pub in Ypres some years ago the owner gave myself and the father in law directions to the abbey and shop. I think we had one of each of the 3 that they make and happily slept all the way back to Calais in the back of the car. The place is well out of the way, you could never come across it by accident as you drive through a farm to get there, if I remember. Once there though the car park is surprisingly busy with locals (going by number plates) what do lunch. A really nice place to visit.