Wash and dry lemons throughly.
Roll lemons firmly onto a hard surface until they become soft.
This makes them easier to juice.

In a pot over medium heat, add sugar and 400ml of water.
Simmer lightly until the sugar has dissolved. Do not boil.
Remove from heat.

Juice lemons.
Strain the lemon juice into a large pitcher.
Strain the sugar mixture into the large pitcher.
Add 600ml of cold water.
If it tastes too sweet - add in more water.
Put in fridge.

VODKA:
60ml of vodka to 180ml of lemonade.
Or your own preference.