Whisk together flour, sugar, baking powder, baking soda, and salt in bowl.
In another bowl, beat buttermilk, milk, eggs and melted butter.Heat griddle to medium high heat.
Add the buttermilk mixture into the flour mixture and stir using fork just until blended together (there will be lumps, just try to mix it well enough so that everything's mixed and get rid of as many lumps as possible without over mixing.)
Add batter onto griddle, using about 1/2 cup per pancake.
Cook on both sides until done and serve.