I haven't used it, but I have a cheap way of making it. You have to buy the first bottle of Bragg's, and take 8 ounces of it, and put into a 1 gallon glass jug. Add 2 cans of frozen apple juice (store brand) and the amount of water to mix those 2 cans of juice. Put a coffee filter or paper towel and a rubber band on the opening. In warm weather it takes 1 month, and in winter, it takes 2 months to make vinegar (keeping it in the house.) You can use the rest of your Bragg's to make more batches, and then always reserve a cup of your homemade vinegar (with mother) to start a new batch. Finding glass jugs nowadays is harder.