Required: Four lemons.
About a dozen lumps of sugar.
Carefully remove all pith from the lemons. (Unless this is done, the lemonade will have a bitter flavour.) Slice the lemons into the jug. being careful to take out every pip, for they, like the pith, would give a bitter flavour.
N.B. - Home-made lemonade is far more refreshing and wholesome than the bought "fizzy kinds."