Beer

Ginger Beer like Ginger Ale is a carbonated non-alcoholic beverage that is produced by the natural fermentation of prepared ginger spice, yeast and sugar. Ginger Beer has a stronger flavour and often uses real ginger while Ginger Ale uses ginger syrup.

Ginger beer started with spice trade with the orient and probably was an Oriental import since ginger fermented beer has been in use as medicine in China and India since 500 BC.

Ginger Beer is regulated to 2% alcohol if any alcohol is present at all.

Mexico has a long history of beer going back to the Mesoamerican cultures who knew of fermented alcoholic beverages. Including corn beer, long before the Spaniards brought distillation with them.
European beer brewed with barley was introduced by the Spaniards after Hernan Cortes’s arrival. But beer production was strictly regulated with prohibitions and taxes by Spanish rulers and it was only after the Mexican War of Independence that breweries flourished again, and this was boosted by the arrival of German immigrants provided the impetus to the opening of many breweries across the country.
Mexican beer is distinctive for its lager like properties, light bodies and has a mild taste, Mexican beers are usually sold in 325 ml bottles. Corona is the most renowned Mexican beer sold all over the world.

151 Proof Rum

Overproof Rums are Rums with a much higher alcohol concentration which is usually greater than 57.5% but although 151 proof means 75.5% ABV, most Rums with 57.5% Alcohol are labelled as 151.

Overproof Rums are highly inflammable and are usually used in cocktails as a top layer meant to be ignited and burst into flames, rendering a charred flavour to the drink while arousing awe and interest by quite a fire show.

Overproof Rums are not meant to be drank neat or even as a base spirit, the alcohol concentration is too high, but it can add special character to mixed drinks.

Bacardi 151 was a famous overproof Rum and although it has been discontinued in 2016, there are other pretty famous brands like Lemon Hart 151, Hamilton 151, Wray and Nephew White Overproof Rum and Pusser’s Gunpowder Proof.

Note: Gunpowder Proofing a Navy Rum was an old concept, where Rum poured over Gun powder would not wet the gun powder and when lit, the gun powder will catch fire once the alcohol has burnt.

Navy rum was originally a blend mixed from rums produced in the West Indies. It was initially supplied at a strength of 100 degrees (UK) proof, 57% alcohol by volume (ABV), as that was the only strength that could be tested (by the gunpowder test) before the invention of the hydrometer. The term "Navy strength" is used in modern Britain to specify spirits bottled at 57% ABV. - Wikepedia

Egg

Eggs are used to add viscosity and mouthfeel to cocktails, sour cocktails like Whisky Sour, tastes the best when made with added egg white. Egg whites create a creamy texture and a thick layer of foam on top of a cocktail. While unlike using just the white, adding the yolk adds a bit of a flavour to the drink, it helps emulsify the other ingredients and adds the eggnog flavour to your cocktail.
To get the silk smooth texture and mouthfeel and the foamy head without weakening the drink by melting the ice from too long shaking, which is needed to break the proteins of the egg white to froth up, dry shake the ingredients first, that is, pour all ingredients and the egg white in your shaker and shake hard without ice first, for about a minute and then add ice and shake again.