At Grant Achatz’s buzzy state-of-the-art cocktail lounge, expert mixologists use a double-chamber vacuum pot to create the Rooibos cocktail tableside. In the bottom pot, gin is heated over a flame until it's sucked into the upper pot where it is infused with Rooibos tea, grapefruit, lemon zest, crushed almonds, herbs and spices. When the heat source is removed, the drink gets muddled back into the lower pot and served warm. theaviary.com.
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