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 d-galacturonic acid unit along with blocks of L-rhamnose regions that have side chains of arabinose, galactose, and xylose. Pectin methyl-esterase is the enzyme responsible for hydrolyzing carboxymethyl esters and liberating free carboxyl groups and methyl alcohols. The free carboxyl groups interact with cations to form insoluble pectic acid divalent metal ion complexes. These metal ion complexes precipitate in the juice and carry all the colloids in orange juice with it. The enzyme would flocculate the cloud and clarify the orange juice. Thus, in order to keep the orange juice cloud intact, it is vital to inactivate pectinesterase. Pectinesterase is inactivated