Most serve at room temperature, but I like it served cold.
NOTE: I like using fresh lime. For the lime zest, I like to wash the limes very well and carefully use the FINE side of a grater on the peel. But be careful to only grate until you see the green is almost off the lime! You don't want to grate any white from beneath the green rind into the green as it is bitter in taste. Then I squeeze away on the limes (I use about 4 limes) for the fresh lime juice.