• Blueberry, Sugar, Donuts Kingpen is a highly potent, lab tested, premium distillate cartridge. It is BHO extracted, cold-pressed, and filtered to create the highest distillate standard. Highly potent cannabis oil, consistent strain specific menu. Blueberry strains are classic indica strains known for its sweet, berry aroma and deeply relaxing effects. Blueberry originated in the late 1970s and gained popularity for its unique flavor profile and calming properties. Indica-dominant strains like Blueberry Z often produce a relaxing, body-heavy sensation that can help alleviate stress, tension, and physical discomfort.