Holy Grail, also called Holy Grail Kush and Holy Grail OG, is an award-winning indica-dominant weed strain made from a genetic cross between Kosher Kush and OG Kush #18. Holy Grail is 20% THC and 1% CBG, making this strain an ideal choice for experienced cannabis consumers. Leafly customers tell us Holy Grail effects include tingly, aroused, and happy