The 2-Word Problem Every Vintage Cookware Owner Should Know - Tasting Table

"Thermal shock is a phenomenon that occurs when an item is suddenly exposed to an extreme change in temperature. Most pieces of cookware are designed to expand and contract evenly to deal with fluctuations in temperature, but when they're exposed too quickly, they can crack or shatter under the sudden strain. Thermal shock is a particular concern with older cookware, according to trained chef and cooking instructor Fred Decker."

"When discussing the mistakes everyone makes with vintage kitchen items, Decker said that "some materials deal with [temperature changes] better than others." While lab-grade borosilicate glass (used to make vintage Pyrex dishes) can more effectively withstand fluctuations, he shared that older ceramic items can be much more sensitive. This is especially true of ceramic baking dishes and serving pieces."

"The most common way in which thermal shock occurs is when you place something very hot on top of something cold, or vice versa. For example, when you move a dish directly from the oven to a cold countertop or pour cold running water into a pot right off the stove. To avoid it, you just need to move a little slower and take some extra precautions."

"Decker said, "Before you take any vintage glass or ceramic items from the oven or the burner, be sure to set out a heatproof trivet for it to sit on, rather than just putting it on the counter." Likewise, it's best to wait until an item is cool before washing it. Additionally, don't place your vintage cookware directly on a hi"

Thermal shock happens when cookware is exposed suddenly to extreme temperature changes. Cookware usually expands and contracts evenly, but rapid shifts can create strain that leads to cracking or shattering. Older cookware can be more vulnerable, particularly older ceramic baking dishes and serving pieces. Lab-grade borosilicate glass used in vintage Pyrex tolerates temperature fluctuations better than more sensitive ceramic materials. Thermal shock commonly occurs when very hot items contact cold surfaces, such as moving a dish from an oven to a cold countertop or adding cold water to a hot pot. Prevent it by placing hot vintage glass or ceramic on a heatproof trivet instead of the counter and waiting for items to cool before washing.

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