Actually I was trying to find out the basic necessity of adding sugar in preparing jam.
closed as off-topic by Remi.b, mgkrebbs, kmm, theforestecologist♦, The Last Word Jun 10 '17 at 17:52
This question appears to be off-topic. The users who voted to close gave this specific reason:
- "Homework questions are off-topic on Biology unless you have shown your attempt at an answer. For more information see our homework policy." – Remi.b, mgkrebbs, The Last Word