Ask any reasonable citizen of the Middle Ages, and they'll tell you that unicorns are extremely wild woodland creatures who can only be captured by virgins. That's a lot of effort to go through for a cocktail party.
Then again, you could just cheat (a little) and make yourself unicorn-inspired cocktails instead. These have all the unicorn essence but none of the actual body parts.
1. Unicorn tears
Making a magical horned horse weep is such a romantic, delicious notion, isn't it? The pop of floral notes with a gin kick is how a unicorn's tears probably taste.
White and red edible glitter
1 shot blue curaçao, chilled
2 shots rose water, chilled
1 shot gin, chilled
1 shot vodka, chilled
Lemonade, to top off
Squirt the glucose syrup onto a plate, turn a martini glass upside down, and dip it into the syrup so that the rim is well coated.
Sprinkle the edible glitter onto a plate, and dip the rim of the martini glass into it until it is coated.
Carefully pour in the blue curaçao, making sure it does not touch the sides or rim.
Next, with equal care, pour in the rose water, gin and vodka.
Slowly and carefully top off the cocktail by pouring in the (chilled) lemonade. Stir and enjoy!