AFAIK, there is no such thing as 100% truffle oil. It's just bits and pieces of truffles tossed into some oil (mostly olive oil). Try both black and white, as they taste different. Only get small quantities, because it does go rancid rather quickly. Cooking with it is not really recommended as heat degrades the flavors. However, I do use it for making scrambled eggs, so it can be done. No high heat, though. Also use it to drizzle over mashed potatoes, etc. Google has lots of info. Cheers! MM