You'll need:
3 pkg. unflavored gelatin
6 oz Frangelico or other hazelnut liqueur
8 oz fresh sour mix, recipe follows
12 oz vodka
8 oz cream soda
Drop of vanilla extract, if needed
Mix the Frangelico with the gelatin in a bowl and let bloom for a few minutes. Meanwhile, make your sour mix. While it is still warm, add it to the gelatin mix to dissolve completely. Add the other ingredients. Taste a drop. If it tastes too sour, add a drop of vanilla extract to even out the flavors. To prepare your pan, spray an 8 inch square glass baking dish with cooking spray. Wipe it around with a paper towel to lightly coat the whole pan. Carefully pour the mixture into the pan, cover well with plastic wrap and aluminum foil and let set in the refrigerator for at least 5 hours, but overnight is best. To serve, slice and eat! Keep them cold, though, or they'll melt on you! Enjoy!
For the Fresh Sour Mix, you'll need:
1/4 cup fresh lemon juice
1/4 cup fresh lime juice
1/2 cup simple syrup (1/4 cup sugar dissolved in 1/4 cup hot [but not boiling] water)
Mix all ingredients.