Paloma

For ➊ drink
4.5 cl reposado tequila (or any good quality blanco)
juice of half a ruby grapefruit
1.5 cl of agave syrup or sugar syrup*
7.5 cl club soda
a squirt of fresh lime juice (optional)

Pour some kosher salt on a plate. Rub half of rim of a highball glass with grapefruit wedge; dip rim of glass in salt..
Mix the grapefruit juice, tequila and sugar syrup until well mixed.
Pour over a tall glass filled with ice and top up with soda water. You could add a squirt of lime juice. And rim the glass with salt.**

*To reduce your sugar intake, simply leave the sugar out. It's less sweet but delicious.
**Combine grapefruit juice, lime juice, and sugar in glass; stir until sugar is dissolved. Stir in mescal, add ice, and top off with club soda. Garnish with grapefruit wedge.
***Replace the fresh grapefruit and soda with sparkling grapefruit lemonade.
***Or have a related Margarita.

Little is known about the historical origin of the Paloma, the most popular tequila-based cocktail in Mexico. Some believe that it is named after La Paloma ('The Dove'), the popular folk song composed in the early 1860s. Diffords guide states it was created by the legendary Don Javier Delgado Corona, owner and bartender of La Capilla, in Tequila, Mexico.
More Paloma recipes @ https://www.liquor.com/slideshows/paloma/#gs.PclY1XI

Old-Fashioned

For ➊ cocktail
1 sugar cube (or ½ ts loose sugar)*
3 dashes Angostura bitters
club soda
6 cl rye whisky or Bourbon

Place the sugar cube (or ½ ts loose sugar) in an old-fashioned glass.
Wet it down with 2 or 3 dashes of Angostura bitters and a short splash of water or club soda. Crush the sugar.
Rotate the glass so that the sugar grains and bitters give it a lining. Add a large ice cube. Pour in the rye (or bourbon).
Serve with a stirring rod.

*Or use simple syrup (¼ to ¾ whiskey).

The Old-Fashioned is the ur-cocktail, dating from the early 19th century. A 'cock tail' was a morning drink made up of a little water, a little sugar, a lot of liquor, and a couple splashes of bitters. Freeze the water, make it with whiskey, and you have an Old-Fashioned. The 60's variation, with a cherry and orange peel was revived with the 'Mad Men' television series.
The Jack Daniel's bourbon variation: gently muddle orange peel, cherry, 1.5 cl sugar syrup and 4 dashes of bitters in an old-fashioned glass. Optionally, add a Maraschino cherry. Add ice and stir in part of the JD Single Barrel bourbon until it dilutes. Keep adding Single Barrel and ice. Garnish with orange peel.
It could also be made with Dutch or Belgian jenever or rum.

Spritz (Italian light cocktail)

For ➊
3 parts  white wine, sparkling wine like prosecco or spumante preferred, cooled
2 parts  aperitivo like Aperol (or Campari for a more bitter taste), cooled
2 parts  selzer or soda water, cooled
a slice of orange (or lemon when using a strong aperitivo)
some ice

Pour the wine and the aperitivo in a tumbler or stemmed wine glass. Add sparkling water (from a syphon if available). Add some ice and a slice of orange.

Serve with small bites of Italian snacks.

When Austria reigned the North of Italy, they developed a habit of diluting the wine with water, called 'Spritzer'. Italians rethought the formula by adding a bitter aperitivo to (sparkling) white wine, and tipping it with a splash of sparkling water, hence the Austrian name 'Spritz' or 'injection'. The typical Venetian spritz has 3 equal parts of each ingredient, other recipes tend to use 40% of wine, and 30% each of water and aperitivo. When using a sparkling wine and a low alcoholic aperitivo like Aperol, you can omit the sparkling water or limit it to a splash, 6 cl wine, 4 cl Aperol, splash of soda, the classic recipe of Aperol since 1950.
Normally, a red/orange aperitivo is used, but it can be replaced by others, like Cynar, or even the  orange-based curaçao blue (resulting in a blue cocktail).

Blackberry gin fizz

For ➋
50 g fresh blackberries
2 tbs sugar
12 cl gin
6 cl lime juice (from 2 juicy limes)
club soda
2 sprigs sweet basil or 2 thin lime wedges (for garnish)

Purée blackberries and sugar in a blender until as liquefied as possible. Strain purée through a fine-mesh sieve or tea strainer into two tall or collins-style glasses; discard seeds in sieve. Divide gin and lime juice between glasses and stir to combine.

Add ice to glasses then top each with soda and a sprig of basil or wedge of lime.

Bloody Campari

For ➋*
2 or 3 large blood oranges, juiced, about 6 tbs (8 cl) juice
3 cl Campari
chilled sparkling brut white wine (prosecco, champagne, cava, cremant...)
blood orange peel or blood orange slice*

Pour 3 tbs (4,5 cl) of blood orange juice in a (chilled) champagne flute.
Add 1 tbs (1,5 cl) of Campari.
Top off each drink with sparkling wine (8 cl).
Garnish with a slice of blood orange and enjoy.*

*For larger quantities, mix the fruit juice and Campari (3 to 1) and chill in the refrigerator. Add sparkling wine in the glass.
**Optional.

A sophisticated 21st century twist on the popular 70's mix Campari orange mix. The herbal bitterness of the Campari, the tart sweet sourness of the blood orange and the sparkling bitter of the brut mix together well. Campari orange was mainly an American invention, quickly followed by Western European countries. In Italy, it is still drunk as an aperitivo, with soda water to release the bitter fragrances of quinine, rhubarb, ginseng, orange peels and aromatic herbs. The aperitivo was launched in the 1840's, to counter the bitter sweet cordials from Holland, spreading over Europe. It was mainly drunk as an opener, 'apertitiuvum' in Latin, to speed up the appetite for the coming dinner. Bitters have long been considered to stimulate digesting.
Campari is also used as a main ingredient for the Negroni (equal parts gin, white vermouth, Campari on ice) and James Bond favourite Americano (white vermouth, Campari and a splash of soda on ice) cocktails. It has become fashionable again, due to extensive marketing, including lush limited edition calendars.
Read more on twisted cocktails: fino martini, quick mint cider.