Dutch premium cocoa powder, or Dutch-processed cocoa powder, undergoes a treatment with an alkalizing agent to neutralize its acidity. This process makes it smoother, less bitter, and often darker in color compared to natural cocoa powder. The "premium" designation typically indicates a higher quality product with a richer flavor and finer texture. It's especially good for baking recipes that call for baking powder or recipes where a deep, intense chocolate flavor is desired.