Screwdriver (cocktail) and orange juice and supposedly invented by interned American fliers"; and in 1949: "the latest Yankee concoction of vodka and orange juice, called a 'screwdriver'". A screwdriver with two parts of Sloe gin, and filled with orange juice is a "Slow (Sloe) Screw". A screwdriver with two parts of Sloe gin, one part of Southern Comfort and filled with orange juice is a "Slow Comfortable Screw". A screwdriver with one part of Sloe gin, one part of Southern Comfort, one part Galliano and filled with orange juice is a "Slow Comfortable Screw Up Against The Wall". A screwdriver with one
Orange juice proprietary mixture, called a "flavor pack", in order to improve the taste and to ensure a consistent year-round taste. The compounds in the flavor packs are derived from orange peels. Producers do not mention the addition of flavor packs on the label of the orange juice. Common orange juice is made from the sweet orange. Different cultivars (for example, Valencia, Hamlin) have different properties, and a producer may mix cultivar juices to get the desired taste. Orange juice usually varies between shades of orange and yellow, although some ruby red or blood orange varieties are a reddish-orange or even pinkish.