Vanilla seems to be a very polarizing addition to chocolate, and I'm probably increasing that issue by offering vanilla powder. So be it.
This is 4% organic dried vanilla added to cane sugar.
This is a great and simple way to add a very controllable amount of vanilla to your chocolate. One teaspoon per pound of chocolate seems to be a great starting point. You really can add it at any time but I like adding it about 12 hours into refining. And you do need to refine it or the sugar will be add a bit of grit to your chocolate.
Don't get hung up that you are adding a little extra sugar to your chocolate. At about 5 grams per teaspoon, it is usually insignificant to the recipe proportions.
Vanilla powder is naturally shelf stable, but its delicate aroma can fade if exposed to moisture, heat, or light. Store in a cool, dry place, tightly sealed and away from direct sunlight or humidity.
Avoid refrigeration or freezing, as condensation can cause clumping and dull the flavor.
When properly stored, vanilla powder will retain its full aroma and flavor for 12–18 months. Keep the lid tightly closed between uses to protect its volatile oils and preserve freshness.