Stubborn German Brewing Company, 119 S. Main Street, Waterloo, will celebrate its sixth anniversary with a Sausagefest party this Saturday, April 23, from noon to 10 p.m. The Deutchmeister Brass Band will play beginning at 6:30 p.m. There will also be a sausage contest and sausage share. Contest entries must be brought to Stubborn German by April 21.