Usually, this has a particular theme surrounding Christmas, so you will likely serve them up at Christmas time. However, with a few variations as mentioned, they could work during the winter months. Ideally, these are a snack that is best served at parties, especially for children. It is an easy and very effective way to display a much-loved chocolate treat that children and adults adore. A Christmas party or even a birthday that falls around that time would be two ideal opportunities to serve the swiss cake roll reindeers.