The line to enter the house of shrooms snaked around the block Friday afternoon, hours after the West Burnside supplement shop was revealed to be selling psychedelic mushrooms. The store is a front for an illegal enterprise, but Portland’s looser psilocybin laws are giving it breathing room, just as Oregon marijuana laws gave pot sellers in 2014.

The 2020 measure approved by voters decriminalized psilocybin in therapeutic settings and made the drug available for adults to take in “service centers,” which must have a facilitator who stays with users while they experience the effects of the drug. The center must also be licensed by the state. That means that the owner of Shroom House, who hasn’t publicly identified himself and won’t respond to messages from WW, could face months in jail if he were arrested for operating a retail business without the proper permits.

Fungi Fantasy: Unveiling the Unique Architecture and Wonders of the House of Shroom

But he probably won’t be busted, says Mike Arnold, a criminal defense attorney who isn’t representing Shroom House. The shop has been able to gather detailed information about each customer—two forms of identification and a credit card number are required to buy the mushrooms—and prosecutors charge by the transaction, not by the amount of mushroom sold.

Mushrooms are low in calories and fat but high in fiber and nutrients, including potassium, calcium, niacin, selenium, vitamin D and copper. They are a rich source of the amino acid glutamate, which chefs use to create savory umami flavor. They contain the antioxidant ergothioneine, which preliminary studies suggest can reduce the risk of Parkinson’s disease.