You first heat the water, the butter, the salt and the sugar on a medium heat until the butter is all melted, then you stir in the flour and you mix it all together really well with a wooden spoon until the dough doesn’t stick to the pan anymore.
Then you take the pan of the stove and you add the eggs one by one, beating well after each egg. Let it cool down slightly before putting it into a piping bag. You then pipe 15 sausages (5cm) on a sheet of baking liner. You bake the eclairs for 25 minutes in a 180 degree oven.