As made by my auntie Gwen. Ingredients are rough measures, so taste it and tweak to get it right.
4 lemons
1 tbl spoon citric acid (from the chemist)
7 heaped tbl spoon white sugar
1 cup water
Grate the zest off the lemons, and juice them.
Put the zest, juice, sugar, water and acid into a small pan and mis till the sugar dissolves. Taste it with a little water, and add more sugar or acid if required.
Let the mix cool in the pan- giving the zest time to infuse, then sieve into a bottle. Keep in the fridge until you want a glass. Dilute to roughly 1 to 6 parts syrup and water.
Yum.
If you prefer a bitter lemon taste, add 2 of the the whole juiced lemons to the pan.