In this video you will learn how to do a Flair bartend: vertical toss grab reverse grip. Start this trick with an over hand grip, then reverse grip right hand. Reverse grip and pour. Make sure you are holding your bottle security. Your holding the bottle and spinning with the other hand. You might have to practice the end pour so you don't spill as you bring the bottle back up. This video does the sequence many time so you can get the hand work done correctly.
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