Pickled Mango in Vinegar

2 cups mature unripe mangoes (peeled and sliced)

2 small onions (sliced)

1 cup vinegar

1 cup granulated sugar

2 tsp Salt

10 peppercorns

2 tsp mustard seeds

Place the mango, onion slices, pepper and mustard seeds in a sterilized glass jar. In a pan heat the vinegar, sugar and salt till the sugar and salt are dissolved. Pour over the mango and onion slices, let it cool and then cover the top of the jar tightly. Store in the refrigerator. Your delicious and healthy pickle will be ready in 3 days. Use the pickled mango and onions, drained, as an accompaniment to roast beef or pork in sandwiches  for that sweet and sour hit.