Hybrid Standard 510 Thread Smooth Taste High Quality Sour Grape is a pungent cross between two legendary strains, Sour Diesel x Granddaddy Purple. This flavor profile offers a sour, fuel-like scent with grape undertones. Great for social outings or relaxing after a long day, Sour Grape walks the fine line of relaxing the head without any heaviness that might put you to sleep.