The POWER of Yeast

Experiment is set upToday we are studying yeast. We’ve started a batch of our pizza dough without the use of our bread machine and have discovered that yeast gets all bubbly in warm water, after about 10 minutes.

So we took two cottage cheese containers, cut a large viewing window in each lid.

Inside each container was placed 1/2 cup of warm water and 1 tsp of yeast. Inside one container was also placed 1 tsp of sugar. The sugar was mixed with the water first and then the yeast was added to one container. A sandwich bag was laid on top of the container and the ring pressed on to hold it in place. The bag was pressed down to make a depression.

After 5 minutes, both containers looked the same.

No changes

After 10 minutes, both containers had condensation on the top.

After 20 minutes, the container with the sugar had a lot of gas which was seen by the plastic sandwich bag window bubbling. We put a pencil on top of the containers to show this better.With Pencil to Show gas

I hoped you enjoyed our experiment,


#1 & Mom R

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4 Responses to The POWER of Yeast

  1. Look at that shiney stove!

  2. notjomomma says:

    I like your experiment. It is good.

  3. desia says:

    Experiments involving real life stuff are the best!

  4. Elaine says:

    That is a cool experiment. Now I understand why sugar is often added to yeast proofing.

    Thank you for sharing this.

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