Orange marmalade without the sugar

[Guest guest]

I picked up some organic oranges to make the marmalade recipe on page 109

of NT, but I want to leave out the sucanat. Should I put in some extra

salt or whey to compensate, and will the lack of sugar affect the

fermentation time? I notice that the lemon preserve on the same page,

which has no sugar, is supposed to be fermented for two weeks, whereas the

marmalade is just supposed to take three days.

TIA,

-