You will need
2oz pearl barley
Rind and juice of 2 lemons
4 pints of water
10 lumps of sugar
Wash the barley and put into a pan with the water.
Put the thinly paired rind and juice into a jug with the sugar.
Bring the water and the barley slowly to the boil, and simmer for 5 minuets.
Then pour the contents of the pan into the jug.
When cold, strain off and use.