I got this one in basic grade and robust flavour.
On first sniff after opening the package it is delicious watermelon scent. Almost like watermelon gum or candy. It almost has a caramel scent to it. Not sure if it is supposed to have that or if there has been some contamination.
I made this one a cold shaken in a water bottle. No sweetener added. It is absolutely delicious. Very refreshing and thirst quenching. It tastes like watermelon gummy candies. Not quite authentic watermelon but also not overly artificial either. I get a bit of a creamy, caramel type flavour in the aftertaste, but it is not bad.
I would be interested to to add a bit of sweetener to see what it does to the taste. Also, not sure if ts one is going to be good hot, but I will give it a try anyway.