Combine the sugar and lemon juice in a cocktail shaker and stir until the sugar is dissolved. Add the gin and crushed ice and shake thoroughly.
Strain into a narrow straight-sided glass, or into a small tumbler.
Recipe from The Book Of Latin American Cooking, by Elizabeth Lambert Ortiz, published by Grub Street, £14.99. Click here to buy the book.
*Please drink responsibly. See drinkaware.co.uk for the facts.
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