The most refreshing drink this world has is a nimbo pani, translation from hindi: Lime-Water. It's so simple, it's just the essence of knowing what you are putting in your body.
3 tablespoons of granular or raw sugar
mix that together until it's all melted.
this is a shortcut method to simple syrup,
we will talk about that some other time!
put ice in the simple syrup, then add:
Juice from one lime.
This could go in the direction of a mixed drink (read: alcohol), and go right ahead. My feeling in the heat of the summer, your body is craving citrus and water, and the sugar just makes it taste oh so delicious!