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How is baking powder different from baking soda?

Two white powders can make baking rise while bringing different ingredients to the reaction. Baking soda supplies bicarbonate; baking powder also includes acid ingredients, with some formulations producing gas in more than one stage.

3–5 min

Questions you could explore

  • Where does the acid partner come from in each case?
  • What does double-acting mean?

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Food

Why bread dough rises

The holes in a slice of bread are a record of what happened inside the dough. In ordinary yeast-raised wheat bread, making gas is only part of the story: the dough also has to hold it.

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Yogurt begins with milk, but its tang and texture develop as starter bacteria change the mixture. Their use of milk sugar and the resulting acidity connect the microbial activity with what ends up on the spoon.

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How does mayonnaise keep oil and water together?

Oil and water separate readily, yet mayonnaise can hold them in a thick mixture. The oil remains in tiny droplets rather than dissolving, and emulsifying components help those droplets stay dispersed.

3–5 min
How is baking powder different from baking soda? | Speech Topic | speaking.app