Ethyl vanillin propylene glycol acetal. Like the original ethyl vanillin, but more creamy and white chocolate without the powdery suffocation. Given the frustratingly long name, I think I'll baptize this one Evan's Acetal.
 
Supplied at 50% in TEC, as it's solid like ice when neat. (If you do want it neat for a project, add 30ml+ to your order and add a note at checkout)