The weather here has been so hot that I decided to make some real lemonade. I used the recipe from Delia's 'Summer Collection'
Scrub the lemons and thinly pare the outer coloured zest from 3 of the lemons. Remove any white pith as it will make the lemonade taste bitter.
Put the zest in a large bowl and add the lemon juice and the sugar. Pour in 1.4 litres of boiling water, stir well, cover and leave overnight in a cool place.
Next day stir again and check for sweetness. Add more sugar if necessary. Serve chilled with lots of ice.