In a medium-sized pan, over medium-high heat bring the sugar, butter, water, milk and salt to just below a simmer. The surface of the liquid will start to wriggle and bubbles will form at the edges.
½ Cup unsalted butter, ½ Cup Water, ½ Cup 2% or whole milk, 2 Teaspoons Sugar, ¼ Teaspoon salt
Turn off the heat and add the flour to the pan, in a steady stream, and stir with a wooden spoon.
1 Cup Flour, All Purpose
Continue to stir until a ball forms and starts to pull away from the pan.
Turn the heat back on to medium-high and continue to stir with the wooden spoon for 1 minute. Steam will be escaping.
Transfer the dough to a mixer fitted with a paddle attachment and turn the machine on low.
With the mixer running allow the dough to release the steam. Continue to stir on low for 5 minutes or until steam can no longer be seen rising from the bowl.
With the mixer running on low, add a single egg.
Allow the egg to become incorporated fully before adding the next egg.
Add all the eggs, one at a time to the batter.
4 Egg
Once all the eggs are incorporated the dough is ready to be piped or scooped.