To add a flour to this list of shortcuts, please email me – ammerrierworld at googlemail dot com.

The microwaving times are given as totals – make sure that you stir the flour and break up any lumps after each minute of microwaving. I’ve included details of flours we tested with less than a 9% protein content for the sake of completion and to give a flavour of the range of flours across the world that can be successfully ‘bleached’ through microwaving.

Anchor Cake, Biscuit and Pastry Plain Flour
6 minutes at 800W
1 cup = 98g
1 part kate flour = 98g flour + 0g cornflour

Francine bread flour
7 minutes at 750W
1 cup = 3 1/2 oz
1 part kate flour = 3 oz flour + 1/2 oz cornflour

McDougall’s 00 grade flour
5 minutes at 750W
1 cup = 4 1/4 oz
1 part kate flour = 3 3/4 oz flour + 1/2 oz cornflour

McDougall’s plain flour
6 minutes at 750W
1 cup = 4 oz
1 part kate flour = 3 1/2 oz flour + 1/2 oz cornflour

Molini Pizzuti Farina per Dolci (“0”)
9 minutes at 800W
1 cup = 114g
1 part kate flour = 100g flour + 14g cornflour

Simply No Knead Cake and Pastry flour
8 minutes at 800W
1 cup = 104g
1 part kate flour = 91g flour + 14g cornflour

Waitrose Organic Plain Flour
7 minutes at 900W
1 cup = 122g
1 part kate flour = 107g flour + 14g cornflour