Place all ingredients in medium-large stockpot
Place 2 spoons in the freezer to chill.
Bring pot to a boil & keep boiling about 40-45 minutes - keep stirring through this time.
You will see the grapes break down, the seeds floating around & the mixture thickening up.
Once you reach the 40 minute mark take one of your spoons from the freezer & dip it in your spread- return to the freezer for 3 minutes. Continue to boil mixture while you are waiting for the spoon.
Remove spoon & tip to see if it runs- if it doesn't- your spread is ready.
If it does run- continue to boil additional 5 minutes at a time & repeat the spoon test until it doesn't run.
Once it's ready - remove from heat. Place a mesh colander over a small bowl & pour your spread in carefully. Press through with your spatula to get as much of the spread into your bowl while straining those seeds & remaining skins out.
Once you have strained completely- toss the seeds & skins & transfer your spread to your jars.
Allow to cool overnight before using.
Store in refrigerator or in freezer for long term.