375ml lemon juice
In a small saucepan, combine sugar and 235ml water. Bring to boil and stir to dissolve sugar. Allow to cool to room temperature, then cover and refrigerate until chilled.
Remove seeds from lemon juice, but leave pulp. In pitcher, stir together chilled syrup, lemon juice and the remaining water.
Peel the rinds from the 5 lemons and cut them into 1/2 inch slices. Set the lemons aside.
Place the rinds in a bowl and sprinkle the sugar over them. Let this stand for about one hour, so that the sugar begins to soak up the oils from the lemons.
Bring water to a boil in a covered saucepan and then pour the hot water over the sugared lemon rinds. Allow this mixture to cool for 20 minutes and then remove the rinds.
Squeeze the lemons into another bowl. Pour the juice through a strainer into the sugar mixture. Stir well, pour into pitcher and put it in the fridge! Serve with ice cubes.