Raspberry vinegar
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Raspberry vinegar is a drink made from raspberry juice, vinegar and sugar.
It is made by filling jars with raspberries, adding vinegar and leaving to stand for 8-10 days then pouring off all the liquid. This process is sometimes repeated several times with fresh fruit each time. Finally the liquid is boiled for 5 minutes with an equal weight of refined sugar.
It is used as with any concentrated squash and simply diluted with water.