Preheat Oven: Preheat your oven to 400°F (200°C). Line a baking sheet with parchment paper.
Boil Water and Butter: In a saucepan, bring the water, butter, and salt to a boil.
Add Flour: Remove from heat, add the flour all at once, and stir vigorously until the mixture forms a ball.
Cool and Add Eggs: Let it cool for 5 minutes, then add the eggs one at a time, beating well after each addition until the dough is smooth and shiny.
Pipe the Dough: Transfer the dough to a pastry bag and pipe small mounds onto the prepared baking sheet.
Bake: Bake for 20-25 minutes, or until golden brown. Allow to cool completely.