Ice cream maker - wikipedia Ice cream maker This article needs additional citations for verification. Please help improve this article by adding citations to reliable sources. Unsourced material may be challenged and removed. ( January 2013 ) Ice cream maker Boku Europa Looking into the preparation of strawberry ice cream A domestic ice cream maker is a machine used to make small quantities of ice cream for personal consumption. Ice cream makers may prepare the mixture by employing the hand - cranking method or by employing an electric motor. The resulting preparation is often chilled through either pre-cooling the machine or by employing a machine that freezes the mixture. An ice cream maker has to simultaneously freeze the mixture while churning it so as to aerate the mixture and keep the ice crystals small ( less than 50 μm ). As a result, most ice creams are ready to consume immediately. However, those containing alcohol must often be chilled further to attain a firm consistency. Contents 1 History 2 Process 3 Models 3.1 Hand - cranked machines 3.2 Electric machines 3.2. 1 Counter-top machines 3.2. 2 Small freezer - unit machines 3.2. 3 Built - in freezer machines 3.2. 4 Ice - salt coolant machines 4 References 5 Further reading History This section is in a list format that may be better presented using prose. You can help by converting this section to prose, if appropriate. Editing help is available. ( January 2018 ) Agnes Marshall 's 1885 patented ice cream maker. Around 1832, Augustus Jackson achieved fame for creating multiple ice cream recipes and pioneering a superior ice cream preparation technique and decoration. In 1843, Nancy M. ( Donaldson ) Johnson of Philadelphia ( Born Dec 28, 1794 in New York, died April 22, 1890 in Washington, DC ) received the first U.S. patent ( # 3254 ) for a small - scale hand - cranked ice cream freezer. The ice cream freezer was a pewter cylinder. Dubbed the `` Queen of Ices '', Victorian English culinary entrepreneur Agnes Marshall was granted a patent for an ice cream machine that could freeze a pint of ice cream in five minutes. Process Ice cream makers may prepare the mixture by employing the hand - cranking method or by employing an electric motor. The resulting preparation is often chilled through either pre-cooling the machine or by employing a machine that freezes the mixture. An ice cream maker has to simultaneously freeze the mixture while churning it so as to aerate the mixture and keep the ice crystals small ( less than 50 μm ). As a result, most ice creams are ready to consume immediately. However, those containing alcohol must often be chilled further to attain a firm consistency. Some machines -- such as certain lower - priced countertop models -- require the resulting mixture to be frozen for additional time after churning is complete. Models This section does not cite any sources. Please help improve this section by adding citations to reliable sources. Unsourced material may be challenged and removed. ( January 2018 ) Hand - cranked machines Nancy Johnson patented the first hand - cranked model in 1843. She then sold the patent to William Young, who marketed the machine as the `` Johnson Patent Ice - Cream Freezer ''. Hand - cranked machines ' ice and salt mixture must be replenished to make a new batch of ice cream. Usually, rock salt is used. The salt causes the ice to melt and lowers the temperature in the process, below fresh water freezing, but the water does not freeze due to the salt content. The sub-freezing temperature helps slowly freeze and make the ice cream. Some small manual units comprise a bowl with coolant - filled hollow walls. These have a volume of approximately one pint ( 500 ml ). The paddle is often built into a plastic top. The mixture is poured into the frozen bowl and placed in a freezer. The paddles are hand - turned every ten minutes or so for a few hours until reaching the desired consistency and flavor. Electric machines There are four types of electric ice cream machines. Each has an electric motor that drives the bowl or the paddle to stir the mixture. The major difference between the four is how the cooling is performed. Countertop machines Counter-top machines use a double - walled bowl with a solution between the walls ( typically distilled water and urea ) that freezes below 32 ° F ( 0 ° C ). In a domestic freezer, this requires up to 24 hours before the machine is ready. Once frozen, the bowl is put into the machine, the mixture is added to the bowl, and the machine started. The paddles rotate, stirring the mixture as it gradually freezes through contact with the frozen bowl. After twenty to thirty minutes, the solution between the double walls thaws, and the ice cream freezes. This type of machine has the advantage of being relatively inexpensive ; however, a pre-frozen bowl makes only one batch at a time. The bowl must be refrozen to make another batch. Multi-batches require extra bowls for the machine, which require extra freezer space. Small freezer - unit machines An ice cream maker that has to be placed inside the freezer. Small freezer - unit machines sit inside the freezer ( or the freezer part of the refrigerator ) and operate similar to a food processor in slow - motion. Every few seconds, the paddles stir the mixture to prevent formation of large ice crystals. When the ice cream sufficiently freezes, the paddles automatically stop rotating and lift. Since the mixture is cooled in the freezer, it takes longer to freeze than other ice cream makers, which work by placing the ice cream bowl in direct contact with the cooling element. A disadvantage is that the freezer door has to be closed over the flat cord, which is plugged into the nearest power outlet. However, some modern refrigerators have a built - in ice - cream maker as an accessory or a specialized electrical outlet for freezer - unit machines. It is not necessary to pre-freeze this type of ice cream maker. However, some people feel that this type of machine produces a lower - quality ice cream because of its slow - motion method. Also available are cordless, battery - operated ice - cream makers that may be placed directly in the freezer, although these tend to require expensive non-rechargeable potassium batteries ( most rechargeable batteries or regular alkaline cells perform very poorly at low temperature ). Built - in freezer machines A table top Gelato machine or Italian ice cream maker with its own built - in freezing system. More expensive, and usually larger, machines have a freezing mechanism built in and do not require a bowl to be pre-chilled. A few minutes after starting the cooling system, the mixture can be poured in and the paddle started. As with coolant - bowl machines, ice cream is ready in twenty to thirty minutes depending on the quantity and recipe. These machines can be used immediately with no preparation, and they make any number of batches of ice cream without a delay between batches. Some of these machines can not be moved without waiting twelve hours before use since moving the unit upsets coolant in the freezing system. These machines are normally kept permanently in one position ready for use making them impractical in smaller kitchens. Electrically - operated ice cream maker Ice - salt coolant machines The fourth type of electric ice cream maker uses an outer tub filled with ice and salt for chilling. An inner canister holds the ice cream mixture and churn and scraper assembly. A high - speed electric motor, geared at approximately 75RPM, drives a mechanism that simultaneously rotates the canister, counter-rotates the scraper, and holds the churn paddles stationary. As the canister turns, the ice cream mixture freezes against the inner wall of the canister. The counter-rotating scraper constantly removes the frozen product from the canister wall and returns it to the mixture. The continuing turning motion of the canister against the stationary churn paddles causes the mixture to become increasingly thick. Enough time, ice and salt produces a smooth `` hard packed '' ice cream. References ^ Jump up to : `` Ice in ice cream : A friend and an enemy ! ''. Dream Scoops. Retrieved 27 October 2017. Jump up ^ Johnson, George D. ( 2011 ). Profiles In Hue. Xlibris Corporation. p. 62. Jump up ^ Chris Clarke ( 2012 ). The Science of Ice Cream. Royal Society of Chemistry. pp. 7 --. ISBN 978 - 1 - 84973 - 127 - 0. Jump up ^ Mary Ellen Snodgrass ( 29 December 2004 ). Encyclopedia of Kitchen History. Routledge. pp. 504 --. ISBN 978 - 1 - 135 - 45572 - 9. Jump up ^ `` Rachel Cooke : my ice - cream obsession ''. The Guardian. 16 October 2017. Jump up ^ Johnson, Nancy ( 9 Sep 1843 ). `` Artificial Freezer Patent '' ( PDF ). Google Patents. Jump up ^ Alburger, Shaunta ( 24 Apr 2017 ). `` The Effects of Salt on Ice Cubes ''. Sciencing. Further reading Hoffmann, Mable ; Gar Hoffmann ( 2004 ). The Ice Cream and Frozen Yogurt Cookbook. Running Press. p. 11. ISBN 0 - 7624 - 1829 - X. Ice cream Flavors Bacon Beer Biscuit Tortoni Blue moon Butter Brickle Butter pecan Cherry Chocolate Chocolate chip cookie dough Cookies and cream Cornish Crab Garlic Grape Green tea Halva Hokey pokey Mango Mint chocolate chip Neapolitan Oyster Pistachio Raspberry Ripple Rocky road Spumoni Stracciatella Strawberry Superman Tiger tail Tutti frutti Vanilla Forms Bar Bastani Booza Cake Cone Dondurma Float Freeze - dried Fried Frozen custard Gelato Kulfi Sandwich Soft serve Sorbetes Stir - fried Dishes Affogato Arctic roll Baked Alaska Banana split Bananas Foster Bombe glacée Café liégeois Cherries jubilee Choc ice Choc - top Coffee cabinet Creme de papaya Dame blanche Milkshake Mix - in Mochi ice cream Parfait Peach Melba Poire belle Hélène Sizzling brownie Spaghettieis Sundae Bacon Golden Opulence Knickerbocker glory Tin roof pie Zuccotto Events Glasgow Ice Cream Wars Ice Cream for Breakfast Day Ice cream social National Ice Cream Month Lists Brands Flavors Parlor chains Related Carlo Gatti Gelato University Geography of ice cream Ice cream cart Ice cream maker Ice cream parlor Ice cream van Penny lick Squround Retrieved from `` https://en.wikipedia.org/w/index.php?title=Ice_cream_maker&oldid=841579569 '' Categories : American inventions Food preparation appliances Ice cream 1843 introductions Hidden categories : CS1 : Julian -- Gregorian uncertainty Articles needing additional references from January 2013 All articles needing additional references Articles needing cleanup from January 2018 All pages needing cleanup Articles with sections that need to be turned into prose from January 2018 Wikipedia articles needing clarification from January 2018 All articles with unsourced statements Articles with unsourced statements from January 2018 Articles needing additional references from January 2018 All articles with specifically marked weasel - worded phrases Articles with specifically marked weasel - worded phrases from June 2013 Articles with unsourced statements from August 2013 Talk Contents About Wikipedia Català Čeština Deutsch Español Euskara Français עברית Nederlands Русский Suomi Svenska 粵語 5 more Edit links This page was last edited on 16 May 2018, at 18 : 04. 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Question: what do you call a ice cream maker
Answer: ice cream maker