Hi Multiveg I have made 3 lots of the marrow and Pineapple Jam this year, each batch being a little different. I used Sarah Ravens version which states it is a Victorian recipe, however she does not like her jams too set and consequently I found this to be more of a syrup, so the first attempt I had to reboil and I then found it rather sweet for my tooth the following batches I reduced the sugar also using a small percentage of preserving sugar. But every one seems to like it!