This cocktail was introduced by the army of the British East India Company in India.

Tonic water contains quinine, which was used to prevent malaria. Because the tonic water consumed to prevent malaria in the 18th century was extremely bitter, gin was added to make it more palatable. The bitter flavor of quinine complements the green notes of gin (flavoured with juniper) much like dry vermouth complements gin in a classic martini.

To make a perfect classic Gin and Tonic, place the ice cubes in a tall, narrow glass with the ice coming near the top. Pour gin, tonic water, and lime juice over the ice. Stir well with a long-necked spoon. Garnish with lime wedge, and serve immediately.

Actual ingredients and amounts: 

• 4 cubes ice
• 2 fluid ounces gin
• 4 fluid ounces tonic water
• 1 tablespoon fresh lime juice
• 1 lime wedge

(image source courtesy CocktailTimes)

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