1. Preheat the oven to 320°F (160°C). Line a baking sheet with baking parchment and set aside. Melt the butter and let cool down again.

2. Add the flour, baking powder, sugar, salt, and lemon zest to a large bowl and mix to combine. Add the melted (and cooled) butter, the egg, and milk and mix with a fork until the dough is roughly combined. Continue with your hands and knead until you get a nice smooth dough. Divide the dough into 15 pieces and shape each piece into a 7 inches (18cm) long log/sausage. Create a knot with each piece and place on the prepared baking sheet. Bake for 15-18 minutes until the cookies are lightly browned. Take out of the oven and let cool down on a wire rack.

3. For the glaze add the confectioners’ sugar and lemon juice to a bowl, gradually add heavy cream until you get a thick and not too runny glaze. Take 1-2 tablespoons of the glaze and transfer it to a second bowl, color it (very) lightly with food color (you want pastels not bright colors) and glaze some of the cookies with it – also top with some sprinkles if you like. Repeat with more glaze and different colors until all cookies are glazed.