Vodka

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.

Blue Curacao Liqueur

Curaçao is a liqueur flavored with the dried peel of the bitter orange laraha. It's been a popular liqueur for more than 150 years, the Dutch East India Company created this orange liqueurs by steeping orange peels in alcohol from the island of Curaçao and called it Curaçao liquor, unlike Triple Sec, Curacao has added spices and herbs to the orange and Curaçao comes in a variety of colours such as clear, orange or blue.

Blue Curaçao being the most used of them, in cocktails. Although Curacao is an orange tinted liquor, Blue Curacao is a regular Curacao dyed bright blue to give it a striking appearance, and thus is a very popular cocktail mixer, whenever a striking colour is desired.

Blue Curacao is usually around 25% ABV.

Blue Curacao is essentially Orange Liqueur tinted Blue, the colour doesn't influence the taste and thus Orange Curacao is interchangeable with Blue Curacao in recipes, if the colour is not important in the appearance.

NOTE: Blue Curacao being an Orange Flavoured Blue Liqueur, it's primary purpose in a cocktail is introducing the Orange flavour and the striking sky blue to the drink, so, if a bottle of Blue Curacao liqueur is something you are not planning to buy right now, you can manage with the Blue Curacao Syrup.
It would add the same flavour and colour profile to the cocktail, all we need to do is simply count for the alcohol absent in the syrup and account for it.

Licor 43 Liqueur

Licor 43 Liqueur is bright yellow, vanilla flavoured Spanish liqueur invented in 1946 by the Zamora family. It is said to be based on an ancient recipe, and the name comes from the 43 herbs and botanicals used to make it. It is light and sweet with a dominant vanilla flavour, with bright citrus and warm cinnamon flavours following it. In Spain it is mostly known as cuarenta y tres.

Pineapple Juice

Rich in antioxidants, this juice pressed from the pulp of the Pineapple is a good protection against cell degeneration, It contains bromelain, a group of enzymes known to reduce inflammation, improve digestion and boost immunity. In drink mixing, there is nothing like the tropical flavour of pineapple juice to add that tropical freshness and nuance to a cocktail.

In drink mixing pineapple having a fruity tropical aroma pineapple juice is a good companion for tropical fruits such as mango, banana, passion fruit, and also pairs well with oranges and grapefruit juice.

Pineapple juice is the juice pressed out of the pulp of the pineapple fruit, several varieties of pineapple are used to manufacture commercial pineapple juice. High on Vitamin C and enzymes that have been shown to activate healthy immune response, it’s a good juice to start a day. The enzyme bromelain in pineapple juice, triggers analgesic response in the body to fight pain and reduce swelling. In cocktails, Pineapple juice goes best with Vodka and is often a regular juice in many Vodka cocktails.

Roses 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.