The draft 2003 edition of the Oxford English Dictionary lists the earliest known usage of the concept as being in L. Chatterton's book Modern Cookery published in 1943: "Afternoon tea scones… Time: 20 minutes. Temperature: Gas, Regulo Mark 7". "Regulo" was a type of gas regulator used by a manufacturer of cookers; however, the scale has now become universal, and the word Regulo is rarely used.
The term "gas mark" was a subject of the joint BBC/OED production Balderdash and Piffle, in May 2005. The earliest printed evidence of use of "gas mark" (with no other terms between the two words) appears to date from 1958.[1] However, the manufacturers of the "New World" gas ranges in the mid-1930s gave away recipe books for use with their cooker, and the "Regulo" was the gas regulator.[2] The book has no reference to degrees. All dishes to be cooked are noted to be at "Regulo Mark X".
Equivalents in Fahrenheit and Celsiusedit
Gas mark 1 is 275 degrees Fahrenheit (135 degrees Celsius). Oven temperatures increase by 25 °F (13.9 °C) each time the gas mark increases by 1. Below Gas Mark 1 the scale markings halve at each step, each representing a decrease of 25 °F.
For temperatures above 135 °C (gas mark 1) to convert gas mark to degrees Celsius () multiply the gas mark number () by 14, then add 121:
For the reverse conversion:
These do not work for less than 1. For temperatures below 135 °C (gas mark 1), to convert gas mark to degrees Celsius apply the following conversion:
For the reverse:
It is usual to round the results of such calculations to a round number of degrees Celsius.
Note that tables of temperature equivalents for kitchen use usually offer Celsius values rounded to the nearest 10 degrees, with steps of either 10 or 20 degrees between Gas Marks.[3][4]
Other cooking temperature scalesedit
French ovens and recipes use a scale based on the Celsius scale:"Thermostat" (abbreviated "Th"), where Thermostat 1 equals 30 °C for conventional ovens, increasing by 30 °C for each whole number along the scale.[5]
In Germany, "Stufe" (the German word for "step") is used for gas cooking temperatures. Gas ovens are commonly marked in steps from 1 to 8, corresponding to:
Stufe
1
2
3
4
5
6
7
8
Approx. Temp.
140 °C
160 °C
180 °C
200 °C
220 °C
240 °C
260 °C
280 °C
Other ovens may be marked on a scale of 1–7, where Stufe 1⁄2 is about 125 °C in a conventional oven, Stufe 1 is about 150 °C, increasing by 25 °C for each subsequent step, up to Stufe 7 at 300 °C.[6]
mark, mark, temperature, scale, used, ovens, cookers, united, kingdom, ireland, some, commonwealth, nations, countries, parkinson, cowan, prince, cooker, dial, with, mark, scale, contents, history, equivalents, fahrenheit, celsius, other, cooking, temperature,. The gas mark is a temperature scale used on gas ovens and cookers in the United Kingdom Ireland and some Commonwealth of Nations countries A Parkinson Cowan Prince gas cooker dial with a gas mark scale Contents 1 History 2 Equivalents in Fahrenheit and Celsius 3 Other cooking temperature scales 4 See also 5 ReferencesHistory editThe draft 2003 edition of the Oxford English Dictionary lists the earliest known usage of the concept as being in L Chatterton s book Modern Cookery published in 1943 Afternoon tea scones Time 20 minutes Temperature Gas Regulo Mark 7 Regulo was a type of gas regulator used by a manufacturer of cookers however the scale has now become universal and the word Regulo is rarely used The term gas mark was a subject of the joint BBC OED production Balderdash and Piffle in May 2005 The earliest printed evidence of use of gas mark with no other terms between the two words appears to date from 1958 1 However the manufacturers of the New World gas ranges in the mid 1930s gave away recipe books for use with their cooker and the Regulo was the gas regulator 2 The book has no reference to degrees All dishes to be cooked are noted to be at Regulo Mark X Equivalents in Fahrenheit and Celsius editGas mark 1 is 275 degrees Fahrenheit 135 degrees Celsius Oven temperatures increase by 25 F 13 9 C each time the gas mark increases by 1 Below Gas Mark 1 the scale markings halve at each step each representing a decrease of 25 F For temperatures above 135 C gas mark 1 to convert gas mark to degrees Celsius C textstyle C nbsp multiply the gas mark number G textstyle G nbsp by 14 then add 121 G 14 121 C displaystyle left G times 14 right 121 C nbsp For the reverse conversion G C 121 14 displaystyle G frac left C 121 right 14 nbsp These do not work for G textstyle G nbsp less than 1 For temperatures below 135 C gas mark 1 to convert gas mark to degrees Celsius apply the following conversion C 243 25 log 2 G 1 1 8 displaystyle C frac 243 25 times log 2 G 1 1 8 nbsp For the reverse G 2 1 8 C 243 25 displaystyle G 2 1 8C 243 25 nbsp It is usual to round the results of such calculations to a round number of degrees Celsius Conversion table 3 4 Gas mark degrees Fahrenheit degrees Celsius Descriptive 1 4 225 107 Very slow very low 1 2 250 121 Very slow very low 1 275 135 Slow low 2 300 149 Slow low 3 325 163 Moderately slow warm 4 350 177 Moderate medium 5 375 191 Moderate moderately hot 6 400 205 Moderately hot 7 425 219 Hot 8 450 233 Hot very hot 9 475 247 Very hot 10 omitted in most tables 500 261 Extremely hot Note that tables of temperature equivalents for kitchen use usually offer Celsius values rounded to the nearest 10 degrees with steps of either 10 or 20 degrees between Gas Marks 3 4 Other cooking temperature scales editFrench ovens and recipes use a scale based on the Celsius scale Thermostat abbreviated Th where Thermostat 1 equals 30 C for conventional ovens increasing by 30 C for each whole number along the scale 5 In Germany Stufe the German word for step is used for gas cooking temperatures Gas ovens are commonly marked in steps from 1 to 8 corresponding to Stufe 1 2 3 4 5 6 7 8 Approx Temp 140 C 160 C 180 C 200 C 220 C 240 C 260 C 280 C Other ovens may be marked on a scale of 1 7 where Stufe 1 2 is about 125 C in a conventional oven Stufe 1 is about 150 C increasing by 25 C for each subsequent step up to Stufe 7 at 300 C 6 See also editOutline of metrology and measurementReferences edit gas OED Online Archived from the original on 25 June 2007 Gourmet Britain Food Encyclopedia Regulo TM settings Gourmetbritain com Retrieved 29 October 2014 a b Conversion Guides BBC Good Food Retrieved 14 March 2015 a b Cooking Conversion Charts The Guardian Retrieved 14 March 2015 Oven Temperatures Practically Edible 5 October 2007 Archived from the original on 30 June 2010 Retrieved 20 June 2010 Temperatur Angaben Temperature Information in German GuteKueche Retrieved 11 Feb 2012 Portal nbsp Energy Retrieved from https en wikipedia org w index php title Gas mark amp oldid 1222117072, wikipedia, wiki, book, books, library,
