In a saucepan, add the butter, water, milk, sugar, and salt and bring it to a boil on medium heat.
120 gs butter, 90 ml water, 12 ml full-fat milk, 12 gs caster sugar, 1/4 tsp salt
Once the mixture starts boiling, stir the flour into the saucepan. Continue stirring the mixture for 5-8 minutes, until the dough starts coming off the sides of the pan and starts making a crackling sound.
85 gs all-purpose flour
Remove the dough from the stovetop and transfer it to a bowl of a stand mixer with a paddle attachment (you can also use an electric mixer for the next steps). Mix the dough on high speed for 3-5 minutes, until there is no more steam coming out of it.
Add the eggs, one at a time, and mix the dough on medium speed until all the eggs are well-incorporated.
2.25 eggs
Transfer the prepared dough into a piping bag with a round tip, line a baking tray with baking paper, then pipe the dough on it in circles if making cream puffs, or logs if making eclairs. Make sure to leave enough space between each one to give them space to puff up.
Cut the craquelin in round circles using a cookie cutter (if making cream puffs) or rectangles (if making eclairs), then place it on top of the piped choux pastry.
Bake the choux pastry at 180 degree celsius for 20 minutes, then 160 degree for 10-15 more minutes until they are puffed up and golden brown from outside.
Once the choux pastry has cooled down, make a small hole at the bottom and fill it with pastry cream