Mixing alcohol and glycerin tinctures creates balanced extracts, or "glycetracts," that combine high-potency extraction with improved flavor and stability. Common methods include creating a 60/30/10 blend of alcohol, glycerin, and water, or blending finished products to achieve better shelf life and taste. For more details, visit Indie Herbalist blog.indieherbalist.com/alcohol-vs-glycerin-extract/ and Napiers napiers.net/blogs/news/how-to-reduce-alcohol-in-tinctures.