Always check your lids for a seal before storing your jars of grape juice. Be it white or red grapes, that you are harvesting, or purchasing at a local market, know that the method for making homemade juice is the same, regardless of seedy, or seedless varieties. Store your juice in a cool, dry, dark place. Instructions. The method below is even simpler because the juice will be frozen instead of canned. How To Make Grape Juice. 100% pure grape juice tastes great. However, if you're looking at SG w/ref to alcohol content I could advise (out of the Boots Book of Home Wine Making and Brewing 1970) Regular sucrose works OK. Step 1 Seal the jars and pasteurize the jars in a hot water bath at 170°F for 20 minutes. Ingredients >> 2 cups wild grapes >> 8 cups water >> organic cane sugar to taste. Making grape juice is a very simple process. You can make great-tasting, all-natural grape juice from fresh grapes. Strain grapes through a strainer and cheese cloth and allow to drain, separating juice from membrane & skin. You might find more intricate and detailed processes, but a basic method still gets the job done. To be fair, canning is not a difficult process, but even though my mother and grandmother canned produce, I have always chosen freezing. Check for Seal & Store Your Grape Juice. Good grape juice doesn't need sugar, and I believe it to be some kind of wine-crime to add any. We don’t add any sugar to our grape juice. Make sure you Earthquake Proof your food storage room. Each 1 pound of grapes will make slightly less than 1 cup of juice. Mash grapes with a potato masher, then place in a pot to simmer for about 10 minutes. Place grapes in a pot with the water.Bring to a boil then turn stove off. While there are several ways to preserve fresh table grapes, making grape juice tops the list of most delicious ways to make those fragrant bunches last well into the winter months. If you can’t do this, do your best. Put 1 quart of washed and stemmed grapes into a sterilized ½-gallon jar. Wash your grapes and remove any of the stems or visibly damaged fruits. How to Make Grape Juice—Even More Simply. Add 1 cup of sugar to the jar and then fill the jar with boiling water.