Step 1

Cook quince and water (water should cover quince) in a large pan until it starts simmering.

Step 2

Add sugar and bring it to simmer. Put the lid on.

Step 3

Turn the heat down and let it simmer on low heat with the lid on for 4 hours until the color is dark red. Check every 30 minutes to make sure it has enough water, if water is not enough, add 1/2 cup more water.

Step 4

When the jam reaches desired color and consistency, turn the heat off and let it cool with the lid on.

Step 5

If desired, add walnuts after the jam is cool.