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It's always easier to understand something when we see it in action so today we're going to do some experiments to help us understand our ingredients better.
Learning Objectives:
You will know the seven basic ingredients in all baked goods.
You will understand how each ingredient works and how to make substitutions.
Learning Goals:
You will draw a diagram of the life of a yeast cell.
You will describe the outcome of the experiment and explain why it happened.
How Yeast Works!
How Yeast Works!
After you mix the dried yeast into your dough and it gets hydrated with liquid it comes out of hibernation and starts to eat the carbs around it. Sugars are the easiest to break down and that's why most of our bread recipes have some sugar in them. If sugars are scarce it will eat the starch in the sugars instead but it takes longer for your bread to rise if that's the case.
After the yeast does its work and makes our bread rise we bake it. In the oven the yeast dies :(
It's ALIVE!!
It's ALIVE!!
The yeast that makes your bread rise is a very simple micro-organism that does a lot of work. It makes bread taste yeasty and rise to lofty perfection.
You typically purchase yeast in a dried form. It is in hibernation when it is dried.
Once the yeast has started to eat it begins burp and sweat a little bit. It burps out Carbon Dioxide gas and sweats off Alcohols. The bubbles of carbon dioxide gas are what make your bread rise. The alcohol that it sweats off gives the nice yeasty taste that we love so much.
Hey Mr. Yeast, I Want Proof That You're Alive!
Hey Mr. Yeast, I Want Proof That You're Alive!
In this experiment, we are going to "proof" some yeast. When you proof yeast you are asking it to prove that it is still alive and able to make your bread rise.
We will need yeast, water, and sugar for this experiment. You can do the experiment along with the video to test the results.
Record Your Findings Here
Record Your Findings Here
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