Squeeze the juices of the oranges and lemon. Use a citrus juicer, if you have to, to get as much of the pulps as possible. Just remember that when using a citrus juicer, don’t overdo the squeezing because if you squeeze the pith of the fruits, the bitter taste of the pith will get mixed in with the juice.

Pour the juices into glasses (or a pitcher). Add twice as much water. 

Add sugar. Mix to dissolve the sugar. 

Add ice and serve.