In a highball glass, muddle the lime juice, simple syrup, mint leaves, chaat masala, and roasted cumin powder until the mint is bruised and everything is well mixed.
Pour in the white rum and add a handful of ice cubes.
Top with soda water and stir gently to combine.
Garnish with a fresh mint sprig and a lime wedge.
Notes
Pro Tips
Use freshly squeezed lime juice for the best flavor.
Don’t over-muddle the mint press just enough to release the oils without tearing it up.
Adjust the spice levels to taste. A little more chaat masala will boost the tang and saltiness.
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