Quick orange marmalade (Slideshow version)
Stage 9/9 : 5 min.
Fill the jars and immediately turn them upside down. This will push the air trapped in the jars up through the hot marmalade and sterilize it.Then stand the jars right way up.
Remarks
For jam or marmalade, it is better to work to temperatures rather than cooking time, which can vary a lot, depending on the ripeness of your fruit.If the texture isn't right (too runny), you can add 2 g of agar-agar for each 1 kg of oranges.