Prepare the necessary products. The grapes better to take the aromatic and delicious depends on the taste of the final dish. It is possible to use white grapes, then the jam will turn out bright. Spices to this jam, you can add any, I added a mixture of peppers, approximately 0.5 tsp. Vinegar I have a cherry, you can use grape, but it's still balsamic.

Onion peel and chop them.

Grapes washed and cut in half, choose the bone (if any)

In a saucepan or pot with thick walls to lay down onions, grapes, sugar, add wine, vinegar, salt and spices. Boil for about an hour until the jam will not become a characteristic, transparent and appetizing appearance. Do not forget to stir.

Ready jam put into jars and store in the refrigerator. The taste of the jam is bright, with a hint of grape and spicy due to spices, the vinegar gives a special flavor.