In a small pot on the stove, gently warm together the milk, sugar, and golden syrup. Remove it from the heat.
In a large bowl, add the butter (cut into cubes) and spices, and whisk in the warm milk mixture a little at a time. Whisk continuously to melt the butter and emulsify the mixture.
In a separate bowl, combine the flour and baking soda.
Stir the flour and baking soda mixture into the liquid ingredients, a little at a time, until all of the ingredients are incorporated into a dough.
Transfer the dough to a plastic wrap, and store in the refrigerator for at least an hour, but preferably 2 days for the flavors to develop.
Once the dough has chilled and matured, take small sections at a time, and roll them out onto a floured surface to a thickness of your preference. For a crispier cookie, roll it thinner, and for a chewier cookie, roll it thicker.
Cut out your cookies into shapes of your choosing. Traditional shapes include hearts, stars, trees, circles, pigs, people, and reindeer.
Place the cookies on a parchment paper lined baking sheet, and bake at 400℉ (200℃) for 5-7 minutes, or until lightly golden around the edges.
Allow the cookies to cool on a baking rack before enjoying.
