Haven't made rhubarb jam, but rhubarb and apple sponge is nice - I think it's called a cobbler in the US/Canada? A light cake batter, spread on top of sliced fruit sprinkled with sugar, and baked.

Last year I was given some lemons, limons (lemon/lime hybrid, seedless) and a couple of small grapefruit so I added an orange, and some pectin because there were very few seeds in the mix, and made some really nice marmalade. 14 jars of it. Himself doesn't eat jam.....I have given quite a bit away but still have some. Never mind, it will get eaten or thrown out in the fullness of time.

Cheers
JennieG