But...Why would a bottle from the supermarket taste different?
A little whiz goes a long way if you hit the right tank.
Storage of diet drinks is important...heat especially affects those sweetened with artificials and changes the taste substantially.
I rarely, if ever, will buy diet drinks in the summer as the ingredients, thus the taste, are affected by the heat.
And yes, I know that they’re not the best thing, but moderation is key.