Pyrex has become a kitchen favorite because of its incredible versatility. It can be used to mix ingredients, bake meals, store leftovers, and reheat food, making it one of the most trusted pieces of cookware in many homes. Although it looks sturdy, Pyrex is still made of glass, and that means it has limits that are easy to overlook during everyday cooking.

One of the biggest risks is something called thermal shock. This happens when the glass experiences a sudden, dramatic change in temperature. Placing a refrigerator-cold dish directly into a hot oven may seem like a convenient shortcut, but it can put enormous stress on the glass. Understanding why this happens is the key to preventing an unexpected kitchen disaster.