The waiting time (two to five minutes) is when something called "esterification" takes place. A good bartender would put the crushed lime wedgie into the gin in the glass....attend to few other drinks...or ask the customer about the weather/well-being etc.. This is time when the reaction of the alcohol in the GIN linking up with the fruity-acidic components in the lime/lemon happens. Esters are sweet smelling organic chemicals -- a class of chemicals used in our perfumes as well. The icecubes tickle the Tonic to release its carbondioxide bubbles, and those bubbles bring out the sweet smell, and break into the air as you lift the glass to your mouth. And the bouquet hits your schnauzer; you feel pleased. The sequence of addition matters in making a good cocktail drink. The same formula works for Bourbon as well. BLT stands for bourbon, lemon/lime and Tonic.... as well as a non-kosher sandwich, with Lettuce and Tomato. The trick to producing a good "bouquet" from the drink is to let the esterification happen. Mixing Gin and Tonic, and then tossing some lime juice, and a twist of the skin on top is the wrong sequence in mixing, because diluted Gin does not react with the lime juice as effectively as gin does before the Tonic arrives into the glass. Recently while browsing I gathered that desi's are slowly moving away from "drinking to get drunk" to having the appropriate alcoholic beverage for socializing as well as part of their diet. Here are a couple of google search results -- that show the progress from 2013 to 2016. We drink to get drunk: India's booze problem - Firstpost www.firstpost.com › living Apr 24, 2013 - In India, the study found, the usual drink poured at home is anywhere between 60 ml and 270 ml. We drink to get drunk –a country on the binge of an alcoholic breakdown. Growing up, I remember the drunken brawls the sweepers next door would have with clockwork regularity. The men would get drunk and beat their wives. Indians are now drinking more, but not to get drunk | India News ... https://timesofindia.indiatimes.com › India News Sep 10, 2016 - Indians are now drinking more, but not to get drunk. Sales of hard liquor such as rum and vodka have shown a sharp decline in 2014-15. Tequila and wine sales have shot up in 2014-15. Western Ghats have wineries sprouting up on the slopes... and a few of them have even competed in the international wine shows. Bravo !