1 Tablespoon plus 2 teaspoons unflavored gelatin
1/4 cup cold water
1/2 cup glucose
2 Tablespoons solid vegetable shortening
1 Tablespoon glycerin
2 lbs (8 cups) confectioners sugar

Combine gelatin and cold water; let stand until thick. Place gelatin mixture in top of a double boiler and heat until dissolved. Add glucose, mix well. Stir in shortening and just before completely melted remove from heat. Add glycerin, flavoring and color. Cool until lukewarm. Place 4 cups confectioners sugar in a bowl and make a well. Pour lukewarm mixture into well and stir mixing in more sugar a little at a time until stickiness is gone. Knead in remaining sugar until smooth and pliable and does not stick to your hands. Use immediately or store covered in plastic. Makes enough to cover 10 x 4 cake.