I'm not sure if you practice this but what I was young, my mother would let us drink Coke with salt when we are having a sore throat or if we are heaty. :P Now she still ask me to drink it when she knows I have soar throat. After that she would ask me not to scream so much at the kids to avoid having soar throat. LOL
Honestly, I hates the taste of Coke with salt but sometimes it really works for the throat. Before I cut down on frizzy drinks, I changed from drinking coke with salt to Sprite or 7up with grind preserved sour plum instead. It taste so much better that the former.
Sometimes, when I ran out of preserved sour plum, I use the powder form instead. It's not as good as the preserved fruit of course but in cases of emergency, the sour plum powder 酸梅粉 works fine for me.
If you are from Singapore, you will be familiar with sour plum powder. We dip fruits like guava, pear in it and eat it together. Especially good when the fruits are cold. Hence, I always have a packet in my fridge.
Next time, if you want to have a frizzy (lime/lemon base) drink with a twist, try adding sour plum powder. One thing to take note of if you are using the powder and not the preserved fruit. Mix the powder to the drink in a jug, then pour it into your glass.
This is because the salt in the powder won't dissolve easy. If you add the powder directly to the glass of Sprite, the salt will stay at the bottom. Guess what happen when with drink it with a straw? :P
Alternatively, add sparingly. :)