- Rinse the muscadine grapes thoroughly under cold water and drain well. 
- In a large stock pot, combine the grapes and water over medium heat. 
- Bring the mixture to a boil and let it simmer for 20-25 minutes until the fruit softens. 
- Use a masher to crush the grapes, then strain the juice through a cheesecloth-lined colander into a clean pot. 
- Combine the strained juice with lemon juice and sugar, and bring it to a rolling boil. 
- Add pectin, return to a boil, and maintain it for 1-2 minutes until the jelly reaches the desired consistency.