The big three classifications for apples include sharps, sweets, and sharp-sweets. As a result, apple cider can be classified based on the type of apples used...
Sharp apples are those that can make your lips pucker up with a single bite. Apples classified as sharp often have lower sugar, high amounts of acid, and low tannins.
Granny Smith is the most common type of sharp apple. In fact, it is one of the few sharps that are sold at just about every grocery store in America.
Golden Delicious apples are a favorite of many. They have an incredibly sweet flavor, but they are also firm and crisp, making them satisfying to crunch into.