COOL COLOR TRICK
Steep butterfly pea flowers (dried blooms or tea bags made from them, available online) in vodka, gin, white rum, or silver tequila for 3 hours. (One tablespoon or tea bag is enough to turn a whole bottle a brilliant blue!) Then strain the liquor and use it to make a sour cocktail, adding lemon juice just as you serve. The acid in the juice will make the drink turn from blue to purple right before your eyes!