The florescent bottle you bought isn’t grenadine; it’s the bastard red-headed stepchild, but thanks to the public demand for antioxidants, pomegranate juice is now available in every store in the double-bubble bottle, so we can all make our own grenadine, the right way.
1 16-ounce bottle of Pom (pomegranate juice)
1 cup of granulated sugar
1 shot of vodka (preferably high proof)
Simmer the juice until reduced by half, then stir in sugar to dissolve, and add vodka.
Let cool before pouring back into original bottle.