About Us
An Oakland based, family-owned business
The 1 Piece Mushroom Bar is a family-owned and operated business based in Oakland, California that also serves all 50 states. Led by the CEO and Founder, Matthew Jadwin, the business was launched in 2023. We operate multiple retail stores to serve our local St. Louis community and we also provide easy access nationwide through the online store. Our mission is to empower people to use the Psilocybin and other mushroom-derived extracts as part of their healthy lifestyle. To support this, we strive to lead the industry in educational resources and conduct free consultations. We carry a massive selection of top quality, 3rd-party lab-tested products from trusted national brands. We ensure access and affordability by keeping prices low and providing membership programs and discounts.
Education is a big focus for us in the rapidly evolving and growing microdosing marketplace. We want you to have the information and selection to allow you to choose the right products for you and your buddies. If you have any questions or comments, please drop us a note! We also offer free consultations – either come into one of our retail stores or fill out the contact form online and we will be in touch.
Numbers Speak For Themselves!
Where to buy 1 Piece Mushroom Bars in Oakland, or nationwide.
- Sponsorship of many local events, including concerts, local chamber events, farmer’s markets, and more.
- Partnership with pet rescue and shelter organizations.
- Free in-person consultations for everyone, even if you decide not to buy.
We encourage you to bring your pets! We have water bowls accessible! We are excited to meet you or see you again. Come visit us.