Any species of grape will work with this recipe. Make your preserved grapes leaves when the leaves are fully grown, but not old and battered by the weather. May and June are good months where I live. Once made these grape leaves will keep in the jar for a year or more.
Bring a large pot of water to a boil and add enough salt to make it taste like the sea. A general rule is 1/4 cup kosher salt to 1 quart of water.
Get another large pot of water ready -- this is what you will can the grape leaves in. Remember you will need something to keep the bottom of the pint jars up off the bottom of the pot. I use a vegetable steamer, but a bunch of canning lids (the rings, not the gaskets) works well as a platform, too. Get a large bowl of ice water ready.
Boil the grape leaves for 30 to 60 seconds (see note about older leaves above), then plunge into the ice water to cool. Drain them once the leaves are all cool.
Take about six grape leaves at a time and roll them up into a cigar from the side -- not the top or bottom. You will need to fold over the leaf end to fit into the pint jars. Pack the grape leaves into the jar, making sure you have about 1 inch of head space at the top.
Sprinkle the lemon juice or citric acid into each pint jar. Bring the water you used to cook the grape leaves back to a boil and ladle it into the jars. Make sure the grape leaves are covered with the brine. Wipe the edge of the pint jar with a clean towel and seal the jar. Process for 15 minutes in a boiling water bath.