When you’re out and about exploring Montana, The Last Best Place, make sure and stop by Bitter Root Brewing in Hamilton for The Last Best Brew. Bitter Root Brewing is proud to be one of the oldest breweries in the state. First opening its doors in 1998, our history has been a whirlwind of great beer, delicious food and amazing customers! Family run and family friendly are two pillars that have stood true since the beginning.When you’re out and about exploring Montana, The Last Best Place, make sure and stop by Bitter Root Brewing in Hamilton for The Last Best Brew. Bitter Root Brewing is proud to be one of the oldest breweries in the state. First opening its doors in 1998, our history has been a whirlwind of great beer, delicious food and amazing customers! Family run and family friendly are two pillars that have stood true since the beginning. .