paragraph_text: Fused quartz is a glass made from chemically-pure SiO2 (silica). It has excellent thermal shock characteristics, being able to survive immersion in water while red hot. However, its high melting-temperature (1723 °C) and viscosity make it difficult to work with. Normally, other substances are added to simplify processing. One is sodium carbonate (Na2CO3, "soda"), which lowers the glass transition temperature. The soda makes the glass water-soluble, which is usually undesirable, so lime (calcium oxide [CaO], generally obtained from limestone), some magnesium oxide (MgO) and aluminium oxide (Al2O3) are added to provide for a better chemical durability. The resulting glass contains about 70 to 74% silica by weight and is called a soda-lime glass. Soda-lime glasses account for about 90% of manufactured glass.

paragraph_text: A&W Cream Soda is a cream soda carbonated soft drink introduced by A&W Root Beer in 1986. A&W Root Beer was first sold at a Veterans Day parade in Lodi, California in 1919 and the company established in 1922 by Frank Wright and Roy Allen. The first product they created was A & W Root Beer. It was not until 1986 that A&W Brands, headquartered in White Plains, N.Y. introduced A&W Cream Soda and A&W Diet Cream Soda through its network of franchised bottlers and distributors. Although cream soda had been created in 1852 by E.M. Sheldon, A&W Brands was one of the first American companies to make it commercially. In 1993, A&W Brands was purchased by Cadbury/Schweppes, and in 1995 Cadbury/Schweppes purchased the Dr. Pepper/Seven-Up Company, which made A&W a part of the Dr. Pepper/Seven Up, Inc. In 2001, DPSU purchased the Snapple Beverage Group (formally TriArc Beverages), and moved the New York-based company operations to its new headquarters in Plano, Texas. This acquisition put A&W within the same company as the top soda brand companies and made A&W Cream Soda the top brand in cream sodas.

paragraph_text: The Pepsi - Cola Made with Real Sugar, formerly called Throwback, is a brand of soft drink sold by PepsiCo in the United States and in sweet stores in South Australia for its flagship Pepsi and Mountain Dew brands. The drinks, called Pepsi Throwback and Mountain Dew Throwback, are named as such because they are flavored with cane sugar and beet sugar instead of high fructose corn syrup, which soft drink companies used to replace sugar (in their North American products) in the 1980s. In addition, these drinks use retro packaging. As of June 2014, Pepsi Throwback has been replaced in one area of the United States by ``Pepsi - Cola Made with Real Sugar '', a new product formulation, also made without high fructose corn syrup.

paragraph_text: High - fructose corn syrup (HFCS) (also called glucose - fructose, isoglucose and glucose - fructose syrup) is a sweetener made from corn starch that has been processed by glucose isomerase to convert some of its glucose into fructose. HFCS was first marketed in the early 1970s by the Clinton Corn Processing Company, together with the Japanese Agency of Industrial Science and Technology where the enzyme was discovered in 1965.

paragraph_text: Maple liqueur refers to various alcoholic products made from maple syrup, primarily in the Northeast United States and Canada. It is most commonly made by mixing Canadian rye whiskey and Canadian maple syrup. Maple liqueur is considered an important cultural beverage in certain Canadian festivals.

paragraph_text: Sweetened potato casserole (Finnish "imelletty perunalaatikko") is a traditional Finnish dish from Päijät-Häme, eaten elsewhere in Finland at Christmastime. It is prepared by letting puréed potatoes, mixed with wheat flour, stand at a temperature of around 50°C (122°F). The amylase in the flour will start to break down the potato’s starches to shorter carbohydrate chains, that is sugars. The temperature cannot exceed 75°C (167°F); otherwise, the amylase molecules will break down. Through this process, the dish gets its distinct sweet flavour; nowadays, however, dark syrup (Finnish "tumma siirappi") can be added to give it sweetness. Dark syrup is made from sugarcane and it's the most common type of syrup in Finland. It has a similar taste to molasses, but is sweeter.

paragraph_text: Cott Beverage Corporation was founded in 1923 by Solomon Cott, a Polish immigrant, and his son Harry, in Port Chester, New York. Harry Pencer, a clothier from Montreal, Quebec, Canada, began to import Cott sodas into Quebec, Canada, in 1952. In 1955 Pencer acquired the Canadian rights to the Cott label and established Cott Beverages (Canada) Ltd., to bottle the Cott line of sodas. From 1976 to 1991, Cott expanded its distribution throughout Canada and back into the U.S. and into Europe. In 1969, the name was changed to Cott Beverages Ltd., and in 1991 to Cott Corporation.

paragraph_text: Deep Eddy Vodka Distillery is a distillery in Dripping Springs, Texas that manufactures vodka products made of south Texas corn using continuous distillation in a column still. Dripping Springs is not a part of Austin, Texas, but is, in fact, a separate town.

paragraph_text: During the summer growing season, phosphate is at a high level. It has a vital role in the breakdown of the sugars manufactured by chlorophyll. But in the fall, phosphate, along with the other chemicals and nutrients, moves out of the leaf into the stem of the plant. When this happens, the sugar-breakdown process changes, leading to the production of anthocyanin pigments. The brighter the light during this period, the greater the production of anthocyanins and the more brilliant the resulting color display. When the days of autumn are bright and cool, and the nights are chilly but not freezing, the brightest colorations usually develop.

paragraph_text: Despite the lack of a coastline, Punjab is the most industrialised province of Pakistan; its manufacturing industries produce textiles, sports goods, heavy machinery, electrical appliances, surgical instruments, vehicles, auto parts, metals, sugar mill plants, aircraft, cement, agricultural machinery, bicycles and rickshaws, floor coverings, and processed foods. In 2003, the province manufactured 90% of the paper and paper boards, 71% of the fertilizers, 69% of the sugar and 40% of the cement of Pakistan.

paragraph_text: Shamishi are semolina fried pies that have been produced in Cyprus since at least the 19th century and they are considered a traditional delicacy of the cuisine of Cyprus. Shamishi are known as a dessert that is served hot in special occasions such as weddings and local religious feasts usually along with loukoumades and water and it is a variety of fried pastry filled with halva and semolina. In addition to halva and semolina, shamishi includes ingredients like flour, water, sugar, mastic, oil (corn or groundnut oil), salt, among others.

paragraph_text: The La Fave Block is located at the intersection of East Cooper Avenue and South Hunter Street in Aspen, Colorado, United States. It is a brick commercial building erected in the late 1880s, during the initial mining boom that created Aspen. Today it is the second oldest brick commercial building in the city, and, along with its neighbors on East Cooper, the only structure left built by Frank LaFave, one of Aspen's early settlers. It was listed on the National Register of Historic Places in 1987.

paragraph_text: Aachener Printen are a type of Lebkuchen originating from the city of Aachen in Germany. Somewhat similar to gingerbread, Printen were originally sweetened with honey, but for two centuries the tradition is to use a syrup made from sugar beets.

paragraph_text: Soda Springs (also, Soda Spring and Singleys Soda Spring) is an unincorporated community in Mendocino County, California. It is located northeast of Boonville, at an elevation of 1388 feet (423 m).

paragraph_text: Cocoa Puffs is a brand of chocolate-flavored puffed grain breakfast cereal, manufactured by General Mills. Introduced in 1958, the cereal consists of small orbs of corn, oats, and rice flavored with cocoa. Essentially, Cocoa Puffs are Kix cereal with chocolate flavoring; similarly, Trix has been, for most of its existence, fruit-flavored Kix.

paragraph_text: Kola Shaler is a cola soft drink manufactured in Nicaragua by a company called "Kola Shaler Industrial", founded by David Robleto Aleman. Kola Shaler ingredients are imported from England. It is lower in sugar and carbonation compared to others soft drinks.

paragraph_text: Valtra is a manufacturer of tractors and agricultural machinery and forms part of the AGCO Corporation. Valtra tractors are manufactured in Suolahti, Finland, and Mogi das Cruzes, Brazil. Valtra’s products in the Brazilian market also include combine harvesters, sugar cane harvesters, self-propelled sprayers and seed drills.

paragraph_text: Aspen Soda was an apple-flavored soft drink sold across the United States by PepsiCo from 1978 until 1982. In 1984, PepsiCo came out with a replacement apple soda under its new Slice line.

paragraph_text: The Prince of Wales is a cocktail created by Albert Edward, Prince of Wales, who later becomes King Edward VII. There are several variations of the cocktail, but what they usually have in common is champagne, angostura bitters, sugar (or simple syrup), either rye whiskey or cognac, and a liqueur.

paragraph_text: Es Teler is a fruit cocktail from Indonesia. Avocado, coconut meat, cincau, jackfruit and other fruits are served with coconut milk, sweetened condensed milk, "Pandanus amaryllifolius" leaf (normally in the form of cocopandan syrup), sugar, and a tiny amount of salt.

Question: When did the manufacturer of Aspen Soda change from sugar to corn syrup?
Answer: the 1980s