Our expert says:
According to the SA Food Tables, 1 cup or 205 ml of a mixture of instant oats to which boiling water has been added weighs 230 g. I don't know why you need this figure, because you need to keep in mind that the nutritive value of the oats remains the same when you add the water. For example if the 50 g of dry instant oats contains 798 kJ (as stated on the label) and you add 180 ml of water (or any volume of water) and you then eat all of the resultant mixture, it will still contain 798 kJ.
Hope this helps
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