Liquid tastes almost like oil?

[Johnnyboy]

Alchemist's Cupboard? The ones I've tried taste buttery. Nothing against AC, taste is subjective.

 

[Smokestack]

Tried four, one was ok,but a little sweet the other three left a vile after taste in my mouth, wish I new why ? , looks like another 30ml I'm going to have to chuck in the sink.