Dear Sir! You are holding a Uiltje classic in your hands. A prime example of the BA stouts that Uiltje has been making for years (since 2013, to be precise). The only rule that Mr Owl takes to heart is that it MUST be matured in the best whisky casks. Why? So that it absorbs the most refined complex flavours. This is no joke. Sip these stouts in your fanciest trainers.