Hello there, I'm Kimi, an expert in culinary tools and appliances. I'm here to provide you with comprehensive and accurate information regarding your kitchen needs. Let's delve into the topic of using cast iron on glass cooktops.

Cast iron cookware is a staple in many kitchens due to its durability, heat retention, and even heat distribution. However, when it comes to using it on glass cooktops, there are several factors to consider.

Firstly, glass cooktops are designed to be sleek, easy to clean, and scratch-resistant. They are made of a special type of glass that is reinforced with ceramic material, which makes them heat resistant and able to withstand high temperatures. However, the surface of a glass cooktop is still more delicate compared to traditional stovetops.

Cast Iron Cookware Concerns:

1. Weight: Cast iron is heavy, and the weight can exert pressure on the glass surface, potentially causing stress over time.

2. Heat Conduction: While cast iron is excellent at retaining heat, it may not be the best conductor of heat to the glass surface. This could lead to uneven cooking or hotspots.

3. Scratching: This is the primary concern. If the cast iron has any rough spots or burrs, it can easily scratch the glass surface. Even if the cookware appears smooth, the weight and heat can cause it to move slightly during cooking, leading to potential scratches.

Alternatives and Recommendations:
- Carbon Steel: As you mentioned, carbon steel cookware is generally okay to use on glass cooktops, provided it has a flat bottom and is smooth. Carbon steel is lighter than cast iron and has a non-stick surface when seasoned properly, reducing the risk of scratching.
- Titanium: Titanium cookware has been tested well on ceramic cooktops, and it's likely to perform similarly on glass cooktops. Titanium is lightweight, durable, and has a smooth surface that is less likely to scratch the cooktop.

Precautions:
- Always ensure that your cast iron or any cookware is clean and free of any rough edges or burrs before placing it on a glass cooktop.
- Use trivets or heat diffusers to distribute heat more evenly and reduce the risk of scratching.
- Avoid sliding or dragging cookware across the glass surface.
- Regularly inspect the cookware and the cooktop for any signs of damage.

In conclusion, while cast iron cookware is not generally recommended for use on glass cooktops due to the risk of scratching and potential heat distribution issues, there are alternatives like carbon steel and titanium that can be used safely. It's important to take precautions and maintain your cookware and cooktop to ensure a long-lasting and enjoyable cooking experience.

read more >>

Cast Iron cookware is not recommended. If the cookware has a burr or rough spot, it will scratch the glass surface. ... Carbon Steel cookware is okay as long as the cookware has a flat bottom and is smooth to avoid scratching. Titanium cookware tested well on ceramic cooktops.read more >>