Start by rolling the lemons on the counter to help release the juice. Cut them in half and juice them using a juicer or citrus squeezer.

Pour the lemon juice through a fine mesh strainer into a bowl or pitcher.

In a separate bowl, combine the freshly squeezed lemon juice with sugar. Stir until the sugar is fully dissolved.

Pour in the cold water and mix well.

Take a sip and see if it needs more sugar or lemon juice. Adjust according to your taste preference.

Chill the lemonade in the refrigerator for at least an hour.

Fill glasses with ice cubes and pour the lemonade over them.

Add lemon slices on the rim of the glass for garnish.