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.

Orange Juice

Orange Juice is an excellent source of Vitamin C, one cup contains twice the daily recommended value. Vitamin C supports the immune system and helps fighting the common cold. The folate in Orange juice supports healthy fetal development. It is low calory and thus is already a qualified alternative to cola fizz in your cocktail if you want to keep your drinks acceptably healthy.

Orange Juice being citrus and naturally sweet and sour, it literally goes with almost any liquor, and of course Vodka being neutral, the best known pairing is with Vodka. But goes well with Dark Rum too, and you get the Planter's Punch, mix it with Champagne and you have made a mimosa, or with tequila to make a tequila sunrise.

Lemon Juice

Lemon 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. Lemon juice is known to reduce or even reverse the effects of excessive alcohol consumption and intoxication.
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.

Grenadin

Grenadine is a common non-alcoholic pomegranate syrup with a characteristic deep red colour. It is a very popular cocktail ingredient, used for its pomegranate flavour and more for its ability to add a reddish to pink tint to a cocktail.

The name Grenadine originates from the French for pomegranate, which is grenade.

Grenadine is not subjected to regulations like alcoholic beverages are, and there are no region specific formulae any more, and thus manufacturers often replace pomegranate with blackcurrant juice and other fruit juices while retaining the same flavour profile.

Many producers now use artificial ingredients like high fructose corn syrup, water, citric acid, sodium citrate, sodium benzoate and food grade red colour along with natural and artificial flavours.

Gomme Syrup

Gomme Syrup or Gomme is a syrup commonly used in cocktails, It is otherwise a regular bar syrup with sugar cane and water, but it has a special ingredient, gum arabic( also known as Gum Sudani and Acacia Gum ), which acts as an emulsifier.
Gomme syrup is made with the highest percentage of sugar to water possible, while the gum arabic prevents the sugar from crystallizing and adds a smooth texture. - says Cocktails Fandom