Step 1: Sift the all-purpose flour into a very large mixing bowl to remove any lumps and ensure a light texture for the Pancake Mix.
Step 2: Add the granulated sugar, baking powder, and salt to the flour.
Step 3: Use a large whisk to stir the ingredients together for at least 60 seconds, ensuring the leavening agents are perfectly distributed throughout the Pancake Mix.
Step 4: Transfer the dry Pancake Mix into an airtight glass container and store in a cool, dry place for up to 3 months.
Step 5: To prepare: Whisk 1.5 cups of the Pancake Mix with 1 cup of milk, 1 large egg, and 2 tablespoons of melted butter until just combined.
Step 6: Cook on a preheated, lightly greased griddle over medium heat until bubbles form on the surface, then flip and cook until golden brown.