One of 12 original effects featured on Reflection, an instructional DVD on the card magic of Bill Goodwin. In Hold the Mayo the four Aces are produced one at a time from between two Jokers.
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In the video Mr.Goodwin explains everything in great detail. He also discusses the little climax at the end, as the 4th ace appears slowly, and gives an alternative ending, where the two jokers change for the two red aces. The video offers an OTS point of view for when you practise the effect. Overall, the trick is not so difficult with very visual productions and a nice flow. Highly recommended.