Bring milk, 125 ml water, butter, salt and sugar to the boil. Add the flour at once and stir until the mixture comes off the bottom of the pot as a lump. Pour into a bowl. Stir in one egg immediately. Stir in the remaining eggs one by one when the mixture has cooled down. Heat the oil in a large pot. Place baking paper on the worktop and brush with 1 tablespoon of oil.
Pour the choux pastry into a piping bag with a medium star-shaped spout and squirt curls (approx. 5 cm Ø) or "eights" onto the baking paper. Cut out the curls on the baking parchment individually. With the help of the baking paper, carefully plunge into the hot oil (approx. 180 °C). Loosen the baking parchment while doing so. Bake the spatter cake from both sides for 2-4 minutes, remove from the fat with a ladle and let it drip off on a cake rack. Stir lemon juice and icing sugar until smooth. Brush the icing onto the spatter cake and allow to dry for at least 1/2 hour