Purple Moose Brewery, Porthmadog, Gwynedd. , March 23, 2013 Upgraded from a 12 Brl to a 30 Brl plant in the same building, but increased capacity from 60 Brl to 150 Brl per week. Beers: Snowdonia Ale 3.6%, Madog Ale 3.8%, Glaslyn 4.2%, Dark Side of the Moose 5.3%.