Lime Juice

Lime Juice being rich in Vitamin C is an excellent remedy for sore throat and aids in digestion and controls blood sugar, and also promoted weight loss. It is used for various culinary and non-culinary purposes all over the world. Lime juice is known to reduce or even reverse the effects of excessive alcohol consumption and intoxication.
The difference between Lime Juice and Lemon Juice is that although the sweet and sour Lemon and the bitter and sour Lime are two different fruits, they have similar properties and tastes similar too, the Lime, unlike the sweet and large Lemon, is used raw and is usually plucked green and has more bitterness and sourness in it's taste, and is grown better in tropical and sub-tropical climates.
In drink mixing, fresh lemon juice brings a tangy zing to so many classic drinks and in fact, it's the most used ingredient in drink mixing other than the liquors of course.

Sugar

Brown Sugar is a sucrose sugar with a distinctive brown colour from the presence of molasses, it is a partially refined or unrefined sugar containing sugar crystals and residual molasses giving it a distinctive taste and flavour of crystallised molasses or toffee. The taste of dark brown sugar is described as a caramel taste with a deep molasses flavour.
Brown sugar is used in cocktails where a caramel candy or toffee flavour is expected.

Caster Sugar is finely ground granulated sugar. It is not as fine a powdered confectioners' sugar and has a little grit to it. It is somewhere between confectioners' sugar and granulated sugar, and melts in mouth with a mild spicy feel to the tongue

Vanilla Sugar is the regular granulated sugar infused with vanilla flavour, by using vanilla pods and seeds to flavour the sugar. A home made alternative is to use vanilla sticks or pods in a jar of sugar and leave it sealed for 4 weeks to allow the vanilla flavour to infuse. Or to use granulated sugar and vanilla extract and blend in a mixer, although this ends up in powdered sugar.

Vodka 1 measure

Vodka is an European clear distilled alcoholic drink that has been one of the most popular drinks across the world .

You'll find it to be the most popular spirit in drink making because of it's neutral taste and absence of flavour and colour.

Vodka often replaces Gin in many traditional cocktails

Vodka is known to be good for the heart, and if consumed in moderation, can prove to be good for cardiovascular health

Note that these days there are flavoured Vodka available in the market too, and some cocktails do make use of them.

Apricot Brandy 1 measure

Brandy, simply put, is a distilled wine. It is categorised under Distilled Alcoholic Beverages along with Whiskey, Rum, Gin, Vodka and Tequila, but it's in a way a cross connection between Fermented liquor and distilled liquor. A Brandy typically containts 35% to 60% Alcohol by Volume ( 70-120 US proof ) and is usually consumed as an after dinner digestif.

Although Brandy is generally classified as a liquor produced by distilling wine, in a broader sense, this encompasses liquors obtained from the distillation of either pomace ( the soild remains of grapes after mashing and extraction of juice for wine making ) or fruit mash or wine.

It may be noted that Brandy like Gin is also one of the original Water of Life or eau de vie, carried over from the medieval tradition of an aquaous solution of ethanol used as a medicine.

The history of Brandy is closely tied to the development of commercial distillation in and around the 15th Century. In early 15th Century French Brandy made way for a new cross-Atlantic trade or Triangle Trade and replaced Portuguese Fortified Wine or Port from the central role it played in trade, mostly due to the higher alcohol content of the Brandy and ease of transport. However by the late 17th Century, Rum replaced Brandy as the exchange alcohol of choice in the Triangle Trade. More info on Wikipedia for the interested Brandy aficionados. Note that an Apricot Brandy can refer to the liquor (or Eau de Vie, Water of Life) distilled from fermented apricot juice or a liqueur made from apricot flesh and kernels.