Coffee to Go by 7 Magic
The performer takes out a cup of coffee and shows it to the audience. He says he is getting thirsty and gently swirls his hand around to show the coffee in the cup. He tastes a sip of his coffee. It is real coffee.
Then he waves his hand, and miraculously the level of coffee goes down! The new release mechanism will allow you to be in complete control of the level of liquid.
You can also pass the cup to a participant and the level of coffee will be decreased in their hands, too!
Comes with a special Starbucks cup, a straw, special gimmick, and detailed online instructions.