Mix the boiling Water with a package of green Apple Jell-O. Allow the Jell-O to dissolve for 1 minute. Add chilled DeKuyper Sour Apple Liqueur Schnapps; stir until well combined. Pour into 1-oz disposable Shot Glasses which can be found at most party and food supply stores. Refrigerate for several hours until Jell-O sets. Makes about 20 shot-sized servings.