Although the exact genetics are still debated, this classic hash strain dates back to the 1990s in Amsterdam. Master Kush lineage traces back to landrace strains from the Hindu Kush mountains in Amsterdam, often cited as a cross of two Hindu Kush landraces or a Hindu Kush x Skunk #1 hybrid, known for its pure Indica genetics, heavy relaxation, and earthy, sweet, hash-like flavor. The flowers take on a Christmas tree formation and a vibrant green hue that is soaked in crystals.