So my first attempt at marmalade wasnt great!! I got a bit distracted and left it in the pan too long and it started to burn, it's still edible but the second batch is much better thankfully.
4 Seville Oranges plus juice of one extra orange
approx 1kg sugar
1.7 litres water
You will need to weigh the oranges to begin with and double this weight is the amount of sugar you will need later.
Halve the oranges and squeeze out all the juice.
Scoop out all the pulp and pips into a square of muslin laid over a sieve and tie the muslin up.
Finely slice all the pith and skin (you can use a food processor for this if you have one).
Put the water, muslin bag and the sliced skin into a pan and simmer uncovered for about 1 and a half to 2 hours, the skin will need to be really soft.
Remove the muslin bag and squeeze it against the side of a sieve to get the last juice and pectin out(this helps the marmalade to set)
You can throw the contents of the muslin bag away now.
Put 2 or 3 small dishes or egg cups in the freezer.
Add the sugar weighed out previously and on a low heat leave the sugar to dissolve, stir occasionally.BE careful not to let it boil until the sugar has completely dissolved.
Increase the heat and bring to a boil without stirring after 10mins check for the setting point.
To do this take the marmalade off the heat and take a small amount out and put onto a small dish from the freezer. Push the liquid with your finger and if it wrinkles slightly and doesnt run back it's set.
You may need to do this several times (returning the pan to the heat and boiling for another 2 minutes) to ensure you don't miss the setting point.
Once its at its setting point stir in the juice of one seville orange to give it an extra kick.
Leave to cool for 10mins. Remove the scum from the top and ladle into sterilised jars.