

Lower prices. Better margins. That’s FastBrewing.
FastBrewing has 400 SKUs ready to ship at 10%+ below standard pricing for manufacturers, restaurants and brands alike across the beverage space
River City Shiitake is a family owned and operated organic mushroom farm based in Portland, Oregon. We grow top quality shiitake and maitake mushrooms certified by Oregon Tilth. Our current production capacity exceeds 800 pounds of mushrooms weekly, with plans to expand to over 1400 pounds. We supply wholesale customers across Oregon and California, offering reliable, certified organic mushrooms for retail, foodservice, and ingredient applications. Our focus on quality and sustainability supports food brands seeking premium, organic mushrooms for fresh, frozen, or processed products. We prioritize consistent supply and transparency to meet the needs of food manufacturers and distributors.
Contact Us
We are a mushroom farm supplying certified organic shiitake and maitake mushrooms to food manufacturers, distributors, and retailers in the food and beverage industry.


FastBrewing has 400 SKUs ready to ship at 10%+ below standard pricing for manufacturers, restaurants and brands alike across the beverage space