Years ago, I ordered some "natural organic" flavors from Natures Flavors (or one of their doorway websites) and was very disappointed because I found out that the flavors were not true extracts, e.g. blueberry from blueberries, but instead constructed by mixing esters extracted from a variety of plant sources and then formulated to mimic the flavor of actual fruits. The fact that my order arrived weeks late didn't help either.
Recently, another chocolatier alerted me to a source of actual cold-extracted organic (and incredibly concentrated) fruit, herb, and nut extracts that are simply excellent. The website is called Medicine Flower, and the link to the flavorings is: http://www.medicineflower.com/flavorextracts.html
They also offer wholesale pricing for manufacturers.
I've made truffles with 16 of their flavorings so far, and am stunned by the superb quality and authenticity of their concentrated flavors. My favorites are (in descending order, but all wonderful): blueberry, banana, elderberry, jasmine, guava, strawberry, raspberry, fig, plum, and black currant.
These are a priceless resource for the chocolate chef.
My highest recommendations!
updated by @hank-friedman: 05/03/15 16:13:28