Though now available throughout the year, citrus fruits are at their peak during January and February. Preserving such seasonal foods means they can be enjoyed for longer, outside of their brief season.
For more on buying, storing and freezing citrus fruits, see the A-Z of Foods.
Seville oranges have a short season. They are now available but they won’t be around for very long (perhaps until the end of February). Seville oranges are perfectly suited to preserving, in part due to their high pectin content which helps set the marmalade. They are a bitter variety but combined with sugar as marmalade they become perfectly palatable. Boiling the oranges first in hot water dissolves the bitter molecules in the pith.
Follow Eunice Power’s recipe for Seville Orange Marmalade.