Can you bake in milk glass cups other than fire king?

It is generally safe to bake in milk glass cups, including those made by manufacturers other than Fire King. Some milk glass cups are made specifically for baking and are oven-safe up to a certain temperature. However, not all milk glass cups are created equal, and it's important to check the manufacturer's guidelines before using any milk glass cup for baking.

There are a few important considerations when it comes to baking in milk glass cups:

* Thermal shock: Milk glass is a type of glass that is made by adding calcium phosphate or bone ash to the glass mixture. This makes milk glass opaque and milky in appearance, but it can also make it more susceptible to thermal shock. Thermal shock occurs when a glass object is subjected to a sudden change in temperature, which can cause it to crack or shatter. To avoid thermal shock, always preheat your milk glass cup before baking.

* Recommended temperature: The recommended temperature for baking in milk glass cups varies depending on the manufacturer. Some milk glass cups are safe for use in the oven up to 400 degrees Fahrenheit, while others may have a lower maximum temperature. It's important to check the manufacturer's guidelines before baking to ensure that you don't exceed the recommended temperature.

* Direct heat: It's generally recommended not to place milk glass cups directly on a stovetop or under a broiler. Milk glass is not as good a conductor of heat as other types of glass, so it can take longer to heat up and may be more likely to crack or shatter if subjected to direct heat. Instead, place your milk glass cup on a baking sheet or cookie sheet before baking.

* Cooling: Allow your milk glass cup to cool completely before moving it from the oven to the counter or sink. This will help prevent thermal shock and cracking.

Keep these considerations in mind when baking in milk glass cups, and you should be able to enjoy your baked goods without any problems.