While both of these are made primarily with a blend of fruit, sugar, and water, the main difference is the texture. Sorbets are completely smooth, while granitas have a grainy and loose texture as a result of the scraping process during freezing. There is a churning step in the process of making sorbet which requires an ice cream machine. Granitas do not need to be churned. They are a little more home cook-friendly since minimal equipment is required.