I’ve been using a good teaspoon of baking powder for every 125g of flour and then if there are some extra heavy ingredients such as chocolate or yoghurt, etc. then some recipes call for an extra half teaspoon of bicarbondate of soda to provide extra lift.
125g plain flour – a good teaspoon baking powder
To make 189g self-raising flour for the chocolate cider log recipe, sift then whisk together
- 181g plain flour,
- 7g baking powder and
- 1g salt
If you like, check out Nigella Lawson’s website here, where she speaks about self-raising flour at length.