Yeast

 What is Yeast?

1 Yeast is Fungi living all around us.

2 Yeast has been around for thousands of years.

3 Man made yeast in a bottle. 

4 Over 1 thousand kinds of yeast. 

Making Ginger beer

Equipment

1 Spoons 

2 Kettle 

3 Bowl

4 Beaker 

5 Cloth Sieve 

6 Funnel 

7 Plastic bottle with cap

Materials 

Group of 3

50ml warm water 

1/2 tsp active dried yeast 

1/2 tsp sugar 

Ginger beer for litre 

3/4 cup sugar 

1/2 tsp cream of tartar 

1L cold water 

Juice of 1/2 lemon 

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 Label your bottle with your groups names.

6 Place all the bottles in the class containers.

7 Store in a cool, dark place for one week before drinking.

8 Make sure you open the bottle in the kitchen sink as it might overflow. Open the cap bit by bit to 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.  Carbon dioxide. 

 3 What are 3 foods that have yeast. Bread,Muffins and Beer.