Gelatin Icing By sunshine4U recipe Comments | 3 Favorites | 54 This dries very fast and very hard. Keep smaller pieces in ziplock bags to keep it workable. If it does start to harden just pop it in the microwave for 4-5 seconds. Gelatin Icing Ingredients 4 Tbsp water1 sachet gelatin powder2 tsp liquid glucose (I used light corn syrup)4 1/2 cups icing sugar1-4 Tbsp cornstarch Instructions 1. Place water in small heat-proof bowl. Sprinkle the gelatin over the top and leave it to soak for about 2 minutes. 2. Sift the icing sugar into a mixing bowl and make a well in the center. 3. Put some water into a saucepan and stand the bowl of water/gelatin into this saucepan. Heat gently until gelatin dissolves. 4. Remove water/gelatin mixture from heat and pour the glucose (or corn syrup) in and stire together. Let sit for about 1 minute. 5. Pour the gelatin mixture into the center of the icing sugar. Use a knife to stir it in. When it has bound together, knead it like bread dough adding cornstarch as needed.