Umm so vegetable glycerin has a caloric density similar to regular sugar but due to it's lower GI it's accepted as a sweetener that works with low carb diets - it has the same potency of regular sugar but doesn't raise blood sugar levels. From what I understand it has about 27 calories per teaspoon and is 60% as sweet as sucrose. Not sure what you want to use it for.. but when I need a sweetener, to make ice cream only, I've turned to coconut nectar and coconut crystals. Just my preference :) good luck!

I find it quite unpalatable

Not sure on "vegetable glycerine", but glycerine was used to sweeten protein bars prior to the feds requiring more strict labeling. i.e. It was a cheap sweetener that the manufacturers could stick in without actually labeling as carbs. When the feds changed that, manufacturers had to label it as a carb (sometimes hidden in "Sugar Alcohols").

Does that mean it's bad? Not necessarily, but be aware it's similar in calories to carbs. No fructose though.

The only time I've ever used it was when making fondant for cakes (I was a professional cake decorator in my former life). I've never used it for anything else, and probably wouldn't use it now.