A great sandwich for your DNA, eyesight and cleansing activity
By law all white flour and some brown flours must be fortified with iron, calcium carbonate, thiamin (B1) and niacin (B3) - see links below. Wholemeal flour is not required to be fortified. We suggest that you check the labelling.
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The RDA/RI's below are based on an average adult and the portion size set above