This Simple Trick Means You Can Tell The Difference Between Plain And Self-Raising Flour

Anna Lewis
·2-min read
Photo credit: Getty Images
Photo credit: Getty Images

From Delish

Picture the scene: you’ve decanted all your flour (your plain flour, your self-raising flour, your bread flour, your almond flour, and every other flour you can think of) into super-stylish Mason jars. You saw it in a magazine once and thought it looked hella cute. We get it.

Problem is, you’ve put your plain flour and self-raising flour into identical jars before labelling them, and now you haven’t got a Scooby Doo which jar holds which flour.

Before you judge, it’s easily done, okay?!?!

So, what do you do – how can you tell which flour is which?

Well, lucky for us, we have a couple of ways of figuring out which flour is which next time you do some baking.

Someone recently asked for this exact advice on the Mums Who Cook & Bake Facebook group, and was met with plenty of great ways of testing flours.

According to, one person suggested putting a teaspoon of the flour in a glass of water.

“Self-raising flour will bubble up to the surface, plain flour will stay sunk.”

Photo credit: Getty Images
Photo credit: Getty Images

Otherwise, you could dip your finger into the flour and taste a very small amount. Apparently “self-raising flour has a tingle on your tongue while plain flour doesn’t.” That’s because self-raising has baking powder in it.

Another option is to add a squeeze of lemon juice or some vinegar to a spoonful of the flour to see if it bubbles – if it does, it’s self-raising flour. This reaction, again, happens because of the baking powder in it.

So, there you have it – next time you find yourself in an unidentifiable flour situation, we’re here to help.

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