The mixture is covered in water, brought to a boil and then simmered for 5 minutes. It then sits for 12-18 hours and you add the sugar and boil again.
Here's a lemon that has been peeled and the pith removed from the sections, I'd never seen a peeled lemon before. Yes I really do need to get out more!!! Dh said the acid from the lemons made his hands burn so you may wish to wear gloves if you are sensitive to these sorts of things.
We stopped at HyVee this afternoon and they had a very good price on oranges 18 pounds for $5.48 I've been wanting to make some for a really long time now but it's hard to find oranges that are not all pith. These oranges were superb in tangyness and in sweetness. We've decided to go back and get another bag tomorrow for juicing. I have plans to make a batch of cranberry orange marmalade as well.