Good enough! My jar of Rose's had about a tablespoon of very dried lime marmalade gel in it (which I scraped out on the spot and ate).
Slice, soak over night and cook 2 dozen big dark green limes. Add _one_ drop of blue food coloring, the batch tends to yellow, the blue will keep it all green! Lots of pectin so it sets up very well by itself. I cut the sugar by 1/2, doesn't seem to make any difference but the lime taste is not choked by the sugar/sweetness. I do tire from slicing the limes, though.