I get mine from the Amish store down the road. Good stuff.
Now, you can use the full-flavored spice in desserts without too much difficulty, but it will give your food a twang if you use too much. Use stale turmeric if the flavor is a problem.
Using large grain sugar, a dash of tumeric, and a few drops of water you can make colored sugar sprinkles for cookies! (See instructions in this post.)
Using my cookie frosting recipe, I made some yellow and some chocolate frosting for fall-colored cookies!
I'm not entirely sure why, but I really love that tree cookie... :)
I mixed a little beet juice into my turmeric yellow frosting, and got a soft orange color. Combine with chocolate frosting and a little plain white, and VOILA! Cute little fall owl cookies!