When temperatures soar, the single most refreshing way to cool down is simple. Bubbles. Fizzy water.
Just add fresh summer fruits bursting with flavour to your favourite mineral or caronated water. The bubbles activate your taste buds ands cleans' the mouth.
Also, bubbles 'feel' cooler. Just try drinking two glasses of water, one fizzy, one still, served at the same temperature. The fizzy one 'feels' cooler, even though it's not. The scientific basis for this isn't fully understood. It's when these little pockets of gas within the liquid burst in your mouth, that you get the feeling of being refreshed.
Mind you, you don't even have to taste these bubbling beauties to feel quenched. A look will get you salivating.