I have noticed that not all water soluble extracts work with making e-juice! It seems for the most part if there is any PG in the extract, it will work. However I noticed some extracts (like LorAnn's Vanilla) have Triglycerides along with PG so even though it is water soluble it wont mix properly with the other components, creating a cloudy fluid. I was wondering if there are any down sides to putting other extracts with specific ingredients into my e-liquid? And has anyone played with making their own extracts? I have heard of people soaking certain spices and stuff in PG and it turning out to be a good flavor. Thank you all!!