Sack (wine)
Sack is an antiquated wine term referring to white fortified wine imported from mainland Spain or the Canary Islands. There was sack of different origins such as:
 Canary sack from the Canary Islands,
 Malaga sack from Málaga,
 Palm sack from Palma de Mallorca, and
 Sherris sack from Jerez de la Frontera. The term Sherris sack later gave way to sherry as the English term for fortified wine from Jerez. Since sherry is practically the only one of these wines still widely exported and consumed, "sack" (by itself, without qualifier) is commonly but not quite correctly quoted as an old synonym for sherry. Most sack was probably sweet, and matured in wooden barrels for a limited time. In modern terms, typical sack may have resembled cheaper versions of medium Oloroso sherry. Today, sack is sometimes seen included in the name of some sherries, such as the Williams & Humbert brand "Dry Sack". Etymology 

The Collins English Dictionary, the Chambers Dictionary, and the Oxford English Dictionary all derive the word "sack" from the French , meaning "dry". However, the OED cannot explain the change in the vowel, and it has been suggested by others that the term is actually from the Spanish word , meaning "to withdraw", as in withdrawing wine from a solera, which led to . The word "sack" is not attested before 1530. Julian Jeffs writes: "The word sack (there are several spellings) probably originated at the end of the fifteenth century, and is almost certainly derived from the Spanish verb  ("to withdraw"). In the minutes of the Jerez town council for 1435, exports of wine were referred to as ." Historical background 

The Duke of Medina Sidonia abolished taxes on export of wine from Sanlúcar de Barrameda in 1491, allowing both Spanish and foreign ships. English merchants were given preferential treatment in 1517, and distinction was upheld between second-rate wines, so-called "Bastards", and first-rate wines which were known as "Rumneys" and "Sacks". Málaga, formerly in the Kingdom of Granada, also took to using the name sack for its wines, which were previously sold as "Garnacha". This wine was similar to another wine known as malmsey, made from Malvasia grapes. Literary references 

Sack appears in several of Shakespeare's plays. John Falstaff, introduced in 1597, was fond of sack, and sometimes refers specifically to Sherris sack. In act 2, scene 2, of The Tempest, Stephano, Trinculo, and Caliban get drunk on sack, a barrel of which had provided Stephano's escape from the shipwreck ("I escaped upon a butt of sack, which the sailors heaved o'erboard..."). Shakespeare's minor character Christopher Sly, a drunkard and an object of a jest in The Taming of the Shrew, declares that he has "ne'er drunk sack in his life." Robert Herrick wrote two comic poems in praise of sack, "His Farewell to Sack" and "The Welcome to Sack." Ben Jonson's Inviting a Friend to Supper refers to "A pure cup of rich Canary wine, / Which is the Mermaid's now, but shall be mine". The early Poets Laureate of England and the UK, such as Jonson and Dryden, received their salary, in part or in whole, in sack. Later laureates, including Pye and Tennyson, took cash in lieu of sack. Samuel Pepys thought "Malago Sack... was excellent wine, like a spirit rather than wine." John Barth's 1960 novel The Sot-Weed Factor contains two mentions of sack. The first occurs when a character delays divulging information until after having a meal: "But not a word till I’ve a spread of sack and mutton." Later, another asks, "Am I addled with the sack, or is’t Lazarus untombed?" In Tales of the Black Freighter, the story within the graphic novel Watchmen by Alan Moore, a marooned sailor describes the scene upon returning to the shores of his hometown with the lines, "I was returned, splashing noisily through the encumbering shallows, sun mulling the horizon behind me, a poker in a glass of sack." In the English fairy tale The Three Heads of the Well, upon leaving the kingdom the antagonist is given "sweetmeats, sugar, almonds, &c., in great quantities, and a large bottle of Malaga sack", in contrast to bread, hard cheese, and a bottle of beer given to the protagonist. References

Fortified wine
Wine terminology