To dunk or to dip a biscuit or some other food, usually baked goods, means to submerge it into a drink, especially tea, coffee, or milk. Dunking releases more flavour from confections by dissolving the sugars, [1] while also softening their texture. Dunking can be used to melt chocolate on biscuits to create a richer flavour.
Dunking is a popular way of enjoying biscuits in many countries. A popular form of dunking in Australia is the "Tim Tam Slam", also known as 'tea sucking'. [2] The physics of dunking is driven by the porosity of the biscuit and the surface tension of the beverage. A biscuit is porous and, when dunked, capillary action draws the liquid into the interstices between the crumbs. [3]
Dunking is first reported with ancient Romans softening their hard unleavened wafers (Latin: bis coctum – "twice baked") in wine. [3] Modern day dunking has its roots in naval history when, in the 16th century, biscuits known as "hard tack" were on board Royal Navy ships, which were so hard that the British sailors would dunk them in beer in order to soften them up. [4] The most popular biscuit to dunk in tea in the United Kingdom is McVitie's chocolate digestive. [5] In the US, Oreos are frequently dunked in milk, while the Dunkin' Donuts franchise is named for the practice of dunking doughnuts into coffee. In South Africa and in India, rusks are a popular food for dunking in both tea and coffee. In the Netherlands, stroopwafels are commonly dunked in tea or coffee, often after having been set on above the hot drink for a few minutes to melt the caramel inside. In Nigeria, bread is commonly dunked in tea or hot chocolate, while Acarajé is dunked in pap. In Australia and New Zealand gingernut biscuits are commonly dunked in tea or coffee. most commonly these are Arnotts brand Ginger Nuts.
Dunking is also used as a slang term for intinction: the Eucharistic practice of partly dipping the consecrated bread, or host, into the consecrated wine, by the officiant before distributing.
While modern day dunking has its origins in 16th century naval history, it wasn't until the 19th century and the emergence of afternoon tea in the early Victorian era that Great Britain began to regard biscuits as something to be dunked in tea, a British custom that was later exported around the globe. [6] Different cultures have different attitudes toward biscuit dunking. Historically in British high society, dunking was frowned upon and generally seen as children's or working class fashion. However, Queen Victoria herself was said to enjoy dunking her biscuits, a German custom from her younger days.[ citation needed ] In 2007, a tea room in Brighton, England, banned dunking on its premises. [7]
In the United States, the act took on a marketing purpose for doughnut sellers in the 1930s. They formed the National Dunking Association, which prompted members to follow "rules for dunking" and used the association to market their products. [8]
Physicist Len Fisher of the University of Bristol presented some light-hearted discussion of dunking on "National Biscuit Dunking Day" in the UK[ when? ], as part of an attempt to make physics accessible. Fisher appeared to be somewhat taken aback by the large amount of media attention, ascribing it to a "hunger for accessible science". Fisher also described his astonishment at journalists' interest in one equation used in the field: Washburn's equation, which describes capillary flow in porous materials. Writing in Nature , he says "the equation was published in almost every major UK newspaper. The journalists who published it took great care to get it right, some telephoning several times to check". [9] [10] Fisher was awarded an Ig Nobel Prize for Physics, in 1999, for his research into biscuit dunking. [11]
In 2012, Michelin-starred English restaurateur Heston Blumenthal researched the effect of dunking chocolate biscuits, and concluded that it improved the biscuit's taste. "If you have chocolate on one side, if it melts a bit, you get a velvety smooth texture and then the delicious flavour as a result." [12]
In 2022, a comparative study concluded that a hobnob style biscuit maintains its integrity for the longest after being dunked in a hot drink. [13]
A cookie or biscuit is a baked snack or dessert that is typically small, flat, and sweet. It usually contains flour, sugar, egg, and some type of oil, fat, or butter. It may include other ingredients such as raisins, oats, chocolate chips, or nuts.
A biscuit, in most English speaking countries, is a flour-based baked and shaped food item. Biscuits are typically hard, flat, and unleavened. They are usually sweet and may be made with sugar, chocolate, icing, jam, ginger, or cinnamon. They can also be savoury, similar to crackers. Types of biscuit include sandwich biscuits, digestive biscuits, ginger biscuits, shortbread biscuits, chocolate chip cookies, chocolate-coated marshmallow treats, Anzac biscuits, biscotti, and speculaas.
Earl Grey tea is a tea blend which has been flavoured with oil of bergamot. The rind's fragrant oil is added to black tea to give Earl Grey its unique taste. However, many if not most Earl Greys use artificial bergamot flavour.
A digestive biscuit, sometimes described as a sweet-meal biscuit, is a semi-sweet biscuit that originated in Scotland. The digestive was first developed in 1839 by two Scottish doctors to aid digestion. The term digestive is derived from the belief that they had antacid properties around the time the biscuit was first introduced due to the use of sodium bicarbonate as an ingredient. Historically, some producers used diastatic malt extract to "digest" some of the starch that existed in flour prior to baking.
A rusk is a hard, dry biscuit or a twice-baked bread. It is sometimes used as a teether for babies. In some cultures, rusk is made of cake, rather than bread: this is sometimes referred to as cake rusk. In the UK, the name also refers to a wheat-based food additive.
McVitie's is a British snack food brand owned by United Biscuits. The name derives from the original Scottish biscuit maker, McVitie & Price, Ltd., established in 1830 on Rose Street in Edinburgh, Scotland. The company moved to various sites in the city before completing the St. Andrews Biscuit Works factory on Robertson Avenue in the Gorgie district in 1888. The company also established one in Glasgow and two large manufacturing plants south of the border, in Heaton Chapel, Stockport, and Park Royal, London. There are seven McVitie's factories in the UK, with each producing a different types of biscuit; the Harlesden site in north-west London manufactures the chocolate digestives.
Maxibon is a Belgian brand of ice cream sandwich made by Froneri, and also previously owned by the Swiss company Nestlé. It consists of a block of frozen dairy dessert containing small chocolate chips with one end covered in chocolate, and the other sandwiched between two biscuits.
In physics, Washburn's equation describes capillary flow in a bundle of parallel cylindrical tubes; it is extended with some issues also to imbibition into porous materials. The equation is named after Edward Wight Washburn; also known as Lucas–Washburn equation, considering that Richard Lucas wrote a similar paper three years earlier, or the Bell-Cameron-Lucas-Washburn equation, considering J.M. Bell and F.K. Cameron's discovery of the form of the equation in 1906.
The Bourbon is a sandwich biscuit consisting of two thin rectangular dark chocolate-flavoured biscuits with a chocolate buttercream filling.
Rich tea is a type of sweet biscuit; the ingredients generally include wheat flour, sugar, vegetable oil and malt extract. Originally called Tea Biscuits, they were developed in the 17th century in Yorkshire, England for the upper classes as a light snack between full-course meals. One of the best-selling biscuits in the British Isles, the biscuit is also popular in Malta and Cyprus. The plain flavour and consistency of rich tea make them particularly suitable for dunking in tea and coffee.
A gingersnap, ginger snap, ginger nut, or ginger biscuit is a biscuit flavored with ginger. Ginger snaps are flavored with powdered ginger and a variety of other spices, most commonly cinnamon, molasses and clove. There are many recipes. The brittle ginger nut style is a commercial version of the traditional fairings once made for market fairs now represented only by the Cornish fairing.
A custard cream is a type of sandwich biscuit popular in the British Isles filled with a creamy, custard-flavoured centre. Traditionally, the filling was buttercream but nowadays cheaper fats have replaced butter in mass-produced biscuits. The filling tastes of vanilla and as such is more akin to the taste of custard made with custard powder than egg custard. It is believed that the custard cream biscuit originated in Britain in 1908. Usually, they have an elaborate baroque design stamped onto them, originating in the Victorian era and representing ferns.
Tim Tam is a brand of chocolate biscuit introduced by the Australian biscuit company Arnott's in 1964. It consists of two malted biscuits separated by a light hard chocolate cream filling and coated in a thin layer of textured chocolate.
Arnott's Group is an Australian producer of biscuits and snack food. Founded in 1865 by William Arnott, they are the largest producer of biscuits in Australia and a subsidiary of KKR.
Hobnobs is the brand name of a commercial biscuit. They are made from rolled oats, are similar to a flapjack-digestive biscuit hybrid, and are among the most popular British and Irish biscuits. McVitie's launched Hobnobs in 1985 and a milk chocolate variant in 1987. The plain variety is manufactured at Tollcross factory in Glasgow, and the chocolate variety is made at the Harlesden factory in north-west London.
A Marie biscuit is a type of biscuit similar to a rich tea biscuit. It is also known as María, Mariebon and Marietta, amongst other names.
Bacon ice cream is an ice cream generally created by adding bacon to egg custard and freezing the mixture. The concept of bacon ice cream originated in a 1973 sketch on the British comedy series The Two Ronnies as a joke; it was eventually created for April Fools' Day by a New York ice cream parlour in 1982. In the 2000s, the English chef Heston Blumenthal experimented with ice cream, making a custard similar to scrambled eggs and adding bacon to create one of his signature dishes. It now appears on dessert menus in other restaurants.
Leonard Ross Fisher is an Australian physicist, and visiting senior research fellow at the University of Bristol, UK. He is known for his research into everyday topics, such as the optimal way to dunk a biscuit, and the optimum use of cheese in a cheese sandwich.