I know I've run across at least one post in the past about making ice cubes out of gelatin. I can't find anything when I do a search. Has anyone done this? I guess my first question is just how to do the basic ice cube.
I'm making a Guinness cake for my boyfriend's 29th birthday (surprise party), and someone gave me the idea of making those geltain ice cubes like tiny jello shots. Is that something I could do with plain gelatin and some kind of clear liquor? I know it would have to be a very small amount to keep them from being runny. Anyone have an idea? Thank you!
I don't know how to make ice cubes out of gelatin, but I know how to make jello shots 
When you make jello shots, you use half the liquid that you would normally use...for example, instead of 2 cups water, you would use 1/2 cup water and 1/2 cup liquor with the regular size package of jello. If you're going to use plain gelatin I think you'd need some sugar added to it, and your best bet would be to use a flavored vodka.
I think that you want to make knox blocks(aka jello jigglers) using alcohol in place of the water and then cut them into squares.
Here is a recipe for margarita knox blocks Serves/Makes: 18
Ingredients:
1 large box Lime Jell-O
1 package Knox Gelatin
2 cups boiling Water
3/4 cup cold Water
1/4 cup Lime Juice
1/2 cup Tequila
1/4 cup Cointreau
Directions:
Stir boiling water into Jell-O and Knox gelatin until dissolved; add cold water and lime juice. Allow to cool a bit before mixing in the Tequila and Cointreau.
Pour into pan and chill until set. Cut into blocks to serve.
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