Preheat your oven to 200 C /400 F. Line your baking pan with parchment paper or silicon mat.

In a medium saucepan , take the water and butter. Place on medium heat.

When it boils , add the salt and sugar.

Add the flour and continue heating while stirring.

After 2 -3 minutes , there should be a film on the bottom of the pan.

Take off heat and transfer the dough to a mixing bowl. Let cool for 3-5 minutes.

Add one egg and mix well.

Add the second egg . Mix until the dough holds a peak.

Fill into a piping bag with a wide tip or cut 1/2 inch hole at the bottom.

Pipe mounds of around 2 cm width . Swirl away at the top to prevent peaks from appearing. If peaks appear , press with wet finger.

Bake at 200 C / 400 F for 20 minutes  and then at 180 C/350 F for 15- 20 minutes until golden brown. Do not open the oven door. Let cool completely before filling!

To fill , cut in half, or poke a hole in the side and fill using a pastry bag.