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The first step in blanching green beans Broccoli being shocked in cold water to complete the blanching. Blanching is a cooking process in which a food, usually a vegetable or fruit, is scalded in boiling water, removed after a brief timed interval, and finally plunged into iced water or placed under cold running water (known as shocking or refreshing) to halt the cooking process.
Parboiling (or leaching) is the partial or semi boiling of food as the first step in cooking. The word is from the Old French parbouillir, 'to boil thoroughly' but by mistaken association with "part", it has acquired its current meaning. [1] [2] The word is often used when referring to parboiled rice.
Biological substances can experience leaching themselves, [2] as well as be used for leaching as part of the solvent substance to recover heavy metals. [6] Many plants experience leaching of phenolics, carbohydrates, and amino acids, and can experience as much as 30% mass loss from leaching, [5] just from sources of water such as rain, dew, mist, and fog. [2]
Shocking broccoli in cold water. Shocking is a cooking process wherein the food substance, usually a vegetable or fruit, is plunged into iced water or placed under cold running water to halt the cooking process. [1] This process usually keeps the colour, taste and texture of a fruit or vegetable. [2]
Check the environmental impact of what you eat and drink.
The water is replaced by the humectant, which results in a lowered water activity for the food product. [3] Osmotic dehydration process results in two way mass transfer in regards to the moisture lost and the solids gained, with moisture loss being much greater than the addition of solids. [ 6 ]
Leaching is the loss or extraction of certain materials from a carrier into a liquid (usually, but not always a solvent), and may refer to: Leaching (agriculture) , the loss of water-soluble plant nutrients from the soil; or applying a small amount of excess irrigation to avoid soil salinity
Cooking can reduce the vitamin C content of vegetables by around 60%, possibly due to increased enzymatic destruction. [37] Longer cooking times may add to this effect. [38] Another cause of vitamin C loss from food is leaching, which transfers vitamin C to the cooking water, which is decanted and not consumed. [39]