Ceramics and glass in gastronomy

Ceramics and glass in gastronomy.

Ceramics and glass are classified as non-metallic inorganic materials. The raw materials for the production of ceramics are: clay as the basic raw material, silica (SiO2 - sand, quartz), feldspar, dyes (metal oxides). Glazes are used to finish ceramic products (toppings). The most important feature of clay, conditioning its use in the production of ceramics, is its behavior when saturated with water. Clay, even though it absorbs water, it is ductile, can be formed and combined, that is, stick together. After drying, clay objects are fired at high temperature. Under the influence of this process, the material is sintered, forming a hard shell, brittle and porous (faience, pottery and brickwork). Admixtures that act as fluxes, such as calcium, magnesium, sodium and potassium, make it possible to obtain a vitreous crust, non-porous. Porcelain products have such a surface, porcelitowe, stoneware and heat-resistant.

Made of thick-walled porcelain, porcelite and faience are used to make popular tableware. Thin-walled porcelain products are dinner services, dinner, breakfast and black coffee suits, for white coffee, tea or cakes. The so-called. ceramic accessories, like chocolate boxes, platters etc.. Pots are made of stoneware, jars, jugs, makers, something, cake molds, kettles and other heat-resistant products. Acid-resistant stoneware is used to produce sewage and sanitary equipment and fittings (laundry troughs, scourers, swimming pools, drainage troughs, wires, valves). For the so-called. building stoneware includes tiles and floor and wall fittings covered with glaze, as well as chutes.

All these products are characterized by low thermal conductivity, easy to keep clean and chemical inertness in contact with food, and also with strong acids and bases. The disadvantages include too much weight, brittleness and cracking. Preservation is soaking, washing with detergents, thorough rinsing and drying.

Glass products include household glassware (tableware, fancy goods, mirrors, thermosy, heat-resistant glass) and building and technical glass. Heat-resistant kitchen glass is blown glassware, cups, coasters and teapots and pressed products in the form of pots, around, patelni, cookie cutters. After shaping, these products are subject to hardening, as a result, they become very resistant to impact and rapid temperature changes. You can cook in them, simmer, to fry, to bake, to bake. Given the ease of washing glassware and the fact, that their food can be observed while it is being prepared, you can suppose, that in the future glass will replace kitchen utensils made of traditional materials used in households and gastronomy.