A tincture is typically an alcoholic extract of plant or animal material or solution of such or of a low volatility substance (such as iodine and mercurochrome). - wikipedia
A good example of a tincture is vanilla extract. That's in one of the jars.
If you read the label on a McCormick for example, you might just find that it also contains corn syrup. We won't be putting that in ours. Usually you sweeten your baked goods with their own ingredients, guys. We're not eating the extract straight up, so it doesn't need to taste good by itself. (Who's running these companies?) Here's a post about it if you want to see more label voodoo.
What's really nice about making tinctures, is 1) it's fun to say and 2) you need Vodka on hand. If you notice in the picture, the bottles and jars are pretty small, so there's leftover vodka.
What would you do with the leftover vodka?