Meanwhile, pour water into a small saucepan and sprinkle with envelopes of unflavored gelatin. Allow to soak for two minutes. Heat on LOW heat, stirring constantly, until the gelatin is dissolved. Remove from heat, and stir in the vodka and sweetened condensed milk. Allow mixture to cool fully on counter. Using a toothpick, add pink food gel color to the mixture one dab at a time, whisking after each addition, until desired color is achieved. Pour into second prepared pan.