Melt 1 stick of butter in Dutch oven. Cover most of bottom of the oven with one layer of popcorn.
Place lid on the oven, and bake until the sounds indicate all the corn has popped; during the popping time, you should lift the oven by the bale and rotate the oven to better stir the whole batch of corn.
Pour popped corn into a paper bag, pour additional melted butter and salt for desired taste. Shake the bag to distribute salt.