Distilled alcohol is antimicrobial and stable, so preserving fruit in alcohol long-term is a good option. The classic German rumtopf recipe below (classically made in a rumtopf crock, but you can ...

Scrub the oranges and place the whole fruits in a large stainless steel pan, or preserving pan. Cover with 2.25 litres/4 pints water, then bring to the boil. Reduce the heat and simmer ...