caramelization
process / process-caramelization
カラメル化
Caramelization is a household or confectionery heating operation that takes sugar (sucrose) above its melting point, producing browning, aroma, and bitter constituents through dehydration and polymerization. Its process and specification differ from JECFA-standardized food-additive caramel colors (Classes I–IV, industrial processes using acids, alkalis, ammonium compounds, or sulfites).
On this page (6 sections)
Reading the bitterness
Heating sugar (sucrose) above its melting point produces browning and aroma through dehydration and polymerization, along with an emerging hint of bitterness. A practical web article from the Culinary Institute of America (CIA) says that late in heating, 「砂糖から立ちのぼる香りにかすかな苦味の気配が出てくることがある」 (in translation: "a faint hint of bitterness may appear in the aroma rising from the sugar"). It directs cooks to set the pan in ice water as soon as the desired color is reached, to 「カラメルが濃くなりすぎたり苦くなったりするのを防ぐ」 (in translation: "prevent the caramel from becoming too dark or bitter"). Yet it also says 「最良のカラメルの風味は、砂糖を濃い褐色になるまで火を通したときに生まれる」 (in translation: "the best caramel flavor develops when sugar is cooked to a deep brown"), favoring deep heating just short of distinct bitterness. This is a practical confectionery article, not a peer-reviewed academic source.
Crème brûlée, finished with a browned sugar layer, is one dish using this heating process (caramelization). The custard cooks slowly in a water bath, whereas its surface sugar is heated locally and briefly to a high temperature with a torch or salamander; their heating histories differ substantially. Simple sugar heating at home or in confectionery is a different category from the industrial production of food-additive caramel color with acids, alkalis, ammonium compounds, or sulfites. Both can brown and become bitter, but whether they yield the same compounds has not been confirmed.
A systematic review of 21 prior studies of heated sugar-and-amino-acid caramel/Maillard model systems found HMF (5-hydroxymethylfurfural) to be the most frequently detected furan compound, followed by furfural and 5-methylfurfural. The review reports that these 3 furans contribute bitterness to caramel model systems.
Sources for this overview
Caramelizing Sugar for Baking and Pastry Recipes
Checked for this overview: Used the CIA article's description of bitterness to support this paragraph. / Used the same article on sugar browning in general to support this paragraph.
Determination and analytical methods for furanic compounds in caramel models
Checked for this overview: Identification of 3 specific furan compounds contributing to bitterness.
Follow the connections
burnt cream →is processed by→ caramelization
caramelization →contains→ 5-hydroxymethylfurfural (HMF) →— perceived bitterness is a…→ bitterness
Hypotheses and recipe candidates for this entry are on the Japanese page.
Structured claims — open a section to read each claim's confidence, evidence and limits
How processing and cooking change it (3)
Scope: A web article for confectioners from the Culinary Institute of America (CIA) (ciafoodies.com)
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process-caramelization —has_sensory_attribute→ "As sugar continues to heat and its color deepens, a hint of bitterness increases. An explanatory article for confectioners from the Culinary Institute of America (CIA) states, of the final stage of heating, 『砂糖から立ちのぼる香りにかすかな苦味の気配が出てくることがある』 (in translation: "a faint hint of bitterness can appear in the aroma rising from the sugar"), and gives the procedure of immediately setting the pan in ice water once the desired color is reached to stop the heating, 『カラメルが濃くなりすぎたり苦くなったりするのを防ぐ』 (in translation: "to keep the caramel from becoming too dark or too bitter"). At the same time, the same article also states 『最良のカラメルの風味は、砂糖を濃い褐色になるまで火を通したときに生まれる』 (in translation: "the best caramel flavor comes from cooking the sugar until it reaches a deep brown color"), treating deep heating right up to the point just before bitterness clearly emerges as the condition for the desired flavor."Scope: The surface-finishing process for crème brûlée
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dish-creme-brulee —processed_by→ process-caramelizationScope: Layer: Literature. A systematic review of 21 prior studies examining caramel and Maillard reaction models prepared by heating monosaccharides and disaccharides derived from sugar (with glucose being used most frequently).
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process-caramelization —contains→ compound-hmf