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Obtain the right apples.
The best cider has a balance between sweetness and tartness. Often times, apple producers (who will often make their own brand of cider) will blend different apples together to get the right combination. Finding "your" blend is just a matter of experimentation, and experimenting will be a delicious endeavor! Here are some basic characteristics of common apple varieties:   Red Delicious: Large, firm red apple with a sweet flavor.  Yellow Delicious: Large, firm yellow apple with a sweet flavor.  Jonathon: Medium, crisp semi-tart apple, with red near the top, descending to green lower down the fruit.  Granny Smith: Medium/small, crisp, tart apple with green color.  Gala: Medium, crisp semi-tart apple with yellow skin blushed with orange to red tinge.