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Firkin

From Biocrawler, the free encyclopedia.

A Firkin is an old English unit of volume. The name is derived from the Middle Dutch word vierdekijn, which means fourth, i.e. a fourth of a full-size barrel.

Nor need you mind the serial ordeal
Of being watched from forty cellar holes
As if by eye pairs out of forty firkins.
— Robert Frost, "Directive"

For beer and ale a firkin is equal to 9 Imperial gallons (about 40.915 l) or a quarter of a barrel. Casks in this size (themselves called firkins) are the most common container for real ale. The word "firkin" (as in "Fox & Firkin") is frequently considered a suitably atmospheric word by those naming an English-style pub - by implication, the establishment will thus be either a new pub in the UK (and hence probably part of a retail chain of "plastic" drinking shops) or a foreign imitation of a British pub.

For wine the firkin had a larger size, namely a third of a tun. A tun being 210 gallons in the UK and 252 fluid gallons in the US, thus a wine firkin is about 318 l (318,226 or 317,975). It is also called tertian or, preferably, puncheon (in the US also shortened to pon).

Butter and soap used to be sold by the firkin, too. In these cases it was rather a measure of weight, 56 lb. (25.4 kg) and 64 lb. (29 kg) respectively.

English casks of wine [1] (*http://www.sizes.com/units/wine_barrel.htm*)
gallon	rundlet	barrel	tierce	hogshead	firkin, puncheon, tertian	pipe, butt	tun
							2	pipes, butts
						1½	3	firkins, puncheons, tertians
					1 1⁄3	2	4	hogsheads
				1½	2	3	6	tierces
			1 1⁄3	2	2 1⁄3	4	8	barrels
		1¾	2 1⁄3	3½	4 2⁄3	7	14	rundlets
	18	31½	42	63	84	126	252	wine gallons
0.83	14.99	26.23	34.97	52.46	69.94	104.92	209.83	imperial gallons	US + pre-1824
3.79	68.14	119.24	158.99	238.48	317.97	476.96	953.92	litres	US + pre-1824
-	15	26¼	35	52.5	70	105	210	imperial gallons	post-1824
-	68.19	119.3	159.1	238.7	318.2	477.3	954.7	litres	post-1824

English casks of ale and beer [2] (*http://www.sizes.com/units/barrel_alebeer.htm*)
gallon	firkin	kilderkin	barrel	hogshead
				1½	barrels
			2	3	kilderkins
		2	4	6	firkins
	8	16	32	48	ale gallons	(1454)-1688
	9	18	36	54	beer gallons	(1454)-1688
	8½	17	34	51	beer & ale gallons	1688-1803
	9	18	36	54	beer & ale gallons	1803-1824
	9	18	36	54	imperial gallons	1824-2000
4.55	40.91	81.83	163.66	245.49	litres	1824-2000