1. Combine all the ingredients in a suitably large bottle or containers. Ensure all containers are sterilised by running through a dishwasher cycle or washing thoroughly then warming in a low oven.
2. Shake or turn the containers once a week for about two months.
3. About two weeks before drinking, strain through a fine sieve and/or coffee filter paper.
4. Once the two weeks are up, decant to pretty bottles and either offer them as Christmas gifts or keep them all to yourself.
For more information on home-made flavoured alcohol, read Julia Watson's article Make your own boozy Christmas gifts.