Aug. 18: Motherwell Red Fife Rhubarb Witbier Firkin Preview. The Bushwakker is a proud partner of Parks Canada and Living Sky Winery this summer and will once again brew the extremely popular Motherwell Homestead commemorative brew, but with a special Canadian 150th Anniversary twist! To acknowledge the fact that William Motherwell abstained from alcohol and preferred rhubarb tea, this year’s Motherwell Red Fife Witbier will utilize the historic Red Fife wheat as well as rhubarb juice from Saskatchewan’s Living Sky Winery. This special Belgian-style wheat beer will be officially released at The Symphony Under The Sky event at the Motherwell Homestead on Saturday, August 26 but you can get a sneak peek on August 19. Motherwell Homestead interpreters will be at the Bushwakker for a special Firkin Preview tapping. They will be wearing period dress, and will briefly describe the big Motherwell Threshing Day/SUTS Grand Event. 5:30 PM.