Crumble is an extract, a form of cannabis concentrate that’s produced using a solvent. But unlike other concentrates, which are generally fluid in their consistency, crumble is defined by its unique, crumbly texture. Sundae Driver is a smooth and creamy cross of FPOG and Grape Pie. profile. Buds are light green in color with purple accents and come drenched in trichomes. This strain offers a mellow and calming high, just like its flavor. For a tasty joint in the sun, give Sundae Driver a try.