Rhubarb Conserves... A Work in Progress

Last October while we were in France, I spotted Bonne Maman's Confiture de Rhubarbe in a supermarket. Not being a huge fan of all things sweet first thing in the morning, this was perfect for my taste buds. It had a lovely balance of sweet and tart. We devoured the jar in the two weeks we were there. After making Rhubarb Ice Cream a few weeks back, I've been eager to recreate this French treat. Luckily I spotted some rhubarb yesterday, so bought a pound to try my luck.
I first started by slicing 1 pound of rhubarb, covering with 3/4 cups of sugar and cooked over low heat, covered, for 5 minutes, until the water began to release from the rhubarb.

Next, cook for 20 minutes over medium heat, uncovered, stirring frequently.
As I hadn't really planned on making this, I didn't have jars on hand. Instead, once the mixture cooled, I stored in an enamel covered tin in the refrigerator over night.
As this was my first attempt, it didn't come out 100% right. While I was very pleased with the flavor, it was a little more watery than I had imagined. The consistency was perfect, so I wouldn't recommend cooking longer. As in the Bonne Maman version, I think I will use a little pectin next time to thicken. Do you have any advice or experience on using pectin? I'd love to hear your suggestions before trying!