Fig jam will thicken as it cools.
- If there is excessive foam at the end, just skim it off. I usually don't even bother.
- If Fig jam ends up being too runny, thicken it with a little cornstarch slurry or just boil jam down some more. It's always better to undercook then overcook jam.
- A candy thermometer is often used to check that the jam is at a temperature of 220 F to set. I never worry about it as the jam is always simmering and has definitely reached that temperature.
- Some folks use a method of putting a plate in the freezer and then adding the jam to it to see if it's set. I have found this a rather useless practice and inconsistent.