This Strain does best on pf-tek or brown rice flour cakes, hence the name. Late to mature, this one doesn’t drop spores until the mushrooms are fully grown, making for clean cakes that produce many flushes. The PF classic strain is named after Robert McPherson, aka Psylocybe Fanaticus who pioneered the PF Tek growing method. It is a slow maturer and grows best with the BRF or PF Tek method.