// Definition
The highest quality grade of water-extracted (ice water) hash, characterized by full-melt capability where the hash completely liquefies when heated with no residual char. It consists almost entirely of intact, mature trichome heads with minimal plant contamination.
// From the Episode
Bubbleman tests John Hatch's six-star bubble hash with the NeoSpectra NIR unit and finds it scored 67% THC -- higher than almost all rosin samples tested. He emphasizes that six-star hash is the pinnacle of extraction quality and that most commercial rosin is pressed from four-star or lower grade material. The hash 'shined like diamonds' under flashlight and melted to caramel texture when rolled in the hand.