Kia ora, Today we are learning about yeast.
Yeast
- beer
-bread
What is yeast?
Yeast Is a living fungi, Yeast has been around for Thousands of years.
Natural yeast in the air.
Over 100 kinds of yeast.
Yeast produces Carbon dioxide
Equipment:
1. Spoons
2. Kettle
3. Bowl
4. Beaker
5. Cloth sieve
6. Funnel
7. Plastic (PET) bottle and cap
Materials:
Bug (for a group of 3)
1. 50ml warm water
2. 1/2 tsp activie dried yeast
3. 1/2 tsp sugar
4. 1/2 tsp ground ginger
Ginger beer (for 1 litre)
1. 3/4 cup sugar
2. 1/2 tsp cream of tartar
3. 1L cold water
4. Juice of 1/2 lemon
5. 1 tsp ginger beer bug
Method
1. In a large bowl, Put the sugar and cream of tartar, Then add the warm water.
2. Stir to dissolve the sugar before adding the cold water.
3. Add the ginger beer bug to the large bowl of cold water.
4. Stir well and then pour into your clean bottle.
5. Lable your bottle with your groups name.
6. Place all the bottles in the class container.
7. Store in a cool, Dark place for one week before drinking.
8. Make sure you opoen the bottle in the kitchen sink as it might overflow. Open the cap bit by bit allow the air to escape.
1. What is fermentation? The chemical breakdown of a substance by bacteria, yeasts, or other microorganisms, typically involving effervescence and the giving off of heat.
2. What effect does sugar have on yeast? Too little sugar in dough can slow down yeast activity: Yeast is a lot like us – it loves to eat sugar. Yeast needs sugar to produce
3. What are 3 foods that have yeast?'
Bread
scones
Beer