You've gone the extra mile and decided to make your own homemade jam. But when you crack open the jar you realize that your jam is really thin and runny.
All you need to fix this problem is a secret ingredient: agar agar. It's a natural type of algae that will help solidify your jam. Simply pour out the jam into a small saucepan, add the agar agar and simmer for 30 seconds. Then place the jam back in the jar, and your problem is solved!