Put the cream with the sugar in the blender and stir briefly. Then add all other ingredients in the order given above and mix briefly after each ingredient. Do not add the pudding powder all at once, but rather in a few stages, otherwise it could lump. Fill the liqueur into a bottle, let it steep for a day in the refrigerator and enjoy!
The liqueur has a longer shelf life with long-life milk and cream, but I think it tastes better with fresh ingredients. Therefore always keep in the refrigerator!