Scotch and Soda is one of the most popular effects in coin magic. And with good reason... it is versatile, easy, and is an extremely strong effect.
Imagine placing two different coins (a quarter and a gold dollar) into a person's hand. You ask them to hand you hand you back one of the coins—the gold dollar. THEN, without any funny moves, you cause the quarter that is in their closed fist to magically transform into a nickel!
They won't believe it, but when they open their hand, there's just a nickel there with no trace of the quarter. It's great for bar bets! Here's another routine you can do:
You get the special coin set and hours of magic video instruction—showing you dozens of effects that are possible with this (and other) gimmicked coins.