Using Bicarb of soda in place of baking powder

[ThriceNightly]

Hi have googled but get these long winded articles without an easy answer

Currently use self raising flour for my batches of 12 muffins and generally add a heaped teaspoon of baking powder (which I am shortly running out of) to the self raising flour

I do have a full tub of bicarb of soda and wondering how much I need to use in place of baking powder?

 

[Raikiri]

Baking powder is a mixture of bicarb, cream of tartar and starch like cornflour.

There's no amount of bicarb that will replace it unless you add an acid to it, buttermilk, cream of tartar, or yogurt, for example, would work.

If you don't have any of these you can make buttermilk by adding 1 tbsp of lemon juice or distilled vinegar to 125ml milk, mixing and leaving it for 5-10 minutes.

Use that in place of some of the wet ingredients in your batter mix, along with half the amount of bicarb (1/2 tsp).

 

[jpaul]

that's why the soda bread recipe I'd posted in the c19 panic buying - plain flour only - discussion, had buttermilk + soda. too.

if you go for a muffin recipe with beaten/folded eggs whites that can give volume too.

some of the baking powders are double acting, so give off gas/co2 when heated ,in oven, too, which you can't formulate/replace, yourself, at home.