This is my Dads recipe that he has been making on and off for over 50years
To make Bug:
1/2 cake of compressed yeast (or 1 tablespoon of granulated yeast)
1 dessert spoon sugar
1 dessert spoon ground ginger
2 large breakfast cups of warm water.
Stir and shake.
Feed the bug for 1 week thus: -
Sunday - 2 teaspoons sugar
Monday - 2 teaspoons ginger
Tuesday - 2 teaspoons sugar
Wednesday - 2 teaspoons ginger
Thursday - 2 teaspoons sugar
Friday - 2 teaspoons ginger
Saturday - Make up......
To Make up Drink:
3 cups of sugar
4 cups of hot water
2 teaspoons of cream of tartar
Juice of 1 or two lemons
Stir until the sugar is dissolved.
Strain the liquid off the bug ( I filter it through coffee filter paper), but any fine weave cloth is OK.
Add the liquid from the bug to the above.
Add 14 cups of cold water, stir.
Bottle, cap and leave for about 6 weeks in a warm place.
Chill and serve.
The bug can be kept going by splitting it in half and adding 2 breakfast cups of warm water to one half and discarding (or giving away the other half) Continue to feed as above and you can make a batch of ginger beer every Saturday until you get banned from the kitchen!