Cookware buying guide

Gas

You can use any type of saucepan on a gas hob. Make sure you regulate the flame to prevent it extending beyond the base of the pan, as this wastes gas and can damage the saucepan handle.

Radiant spiral

Any type of cookware can be used on radiant spiral elements, which are often found on electric cookers.

Solid hotplate

Solid hotplates are usually made from cast iron and have a sealed electric element inside. The best pans to use with this type of hob are those with a flat base, ensuring that they heat evenly without wasting energy.

Ceramic

An electric hob made from ceramic glass with a heating element underneath. Remember always to lift pans and not slide them, otherwise the ceramic surface may be damaged.

Hard anodised aluminium

Hard anodising is a chemical process which changes the surface of aluminium, making it non-porous, glass-smooth and stronger than steel. This creates a scratch-resistant surface which cannot chip, crack or peel. A nonstick coating may also be applied to the interior. This material is suitable for all types of hob except induction.

Coated aluminium

Many aluminium pans have an enamel coating on the outside and a nonstick coating on the inside. An enamel exterior is tough and easy to clean, while a good quality nonstick interior is resistant to scratching and staining and will last for several years providing you use the correct utensils and take care not to overheat the pan. The nonstick coating also works as a barrier, protecting the food from the transference of metal.

Cast iron

Cast iron is thick and heavy and retains and distributes heat well. Although it takes a while to heat up, once it has done so it will retain heat, requiring only a low to medium heat, ideal for food which needs slow, steady cooking. Bear in mind that this will mean the food will continue to cook for some time after the heat has been turned off.

Most cast iron pans have an enamel exterior and an enamel or non-stick interior. They are suitable for all types of hob, including induction. You should, however, be mindful of the weight of a full cast iron pan if you plan to use them on a hob with ceramic surface, since care must be taken to lift rather than drag them. If this is likely to prove difficult you should consider another type of cookware.

Stainless Steel

Stainless steel is a combination of iron and other metals. Chromium and nickel are added to prevent rusting and tarnishing and the steel has various quantities of these metals included according to its quality.

The stainless steel saucepans stocked by John Lewis are 18/10 gauge, meaning that they have 18% chromium and 10% nickel: a high quality stainless steel.

Stainless steel has a hard surface which will not chip, flake, peel or break and is easy to clean, retaining its good looks even after.

years of use. It is a poor conductor of heat, so the base is often bonded to another metal, usually copper or aluminium which conduct heat well, resulting in even cooking and the elemination of hot spots. Some ranges have a nonstick coating, while others have items within the range which are nonstick such as milk pans and frying pans.

Most stainless steel products are suitable for all heat sources including induction, but not all, so refer to the product copy online or ask an assistant in one of our shops.

Glass cookware is made from hard, smooth glass ceramic which is unaffected by heat, water and chemicals. It is completely resistant to extremes of heat and cold and can be used in the freezer and moved directly from the fridge to the hob, oven or microwave.

It is slow to heat but retains heat well and will continue to cook the food after you have removed the pan from the heat. Glass is suitable for all heat sources except induction.

Copper is an excellent conductor, heating up very quickly, distributing  heat evenly resulting in no hotspots. It's bonded with stainless steel to give strength, however it is an expensive material and this is reflected in the price. Copper pans need maintaining with a special cleaner to keep them looking good.

• Don't put an empty pan on a hot burner or in a heated oven. This wastes energy and may damage the pan.
• Don't put a hot pan in cold water or pour cold water into it. This can cause the base of the pan to warp. Leave to cool before washing in hot, soapy water.
• Leave pans to soak before trying to remove stubborn food residue.
• Avoid metal utensils and do not use scouring pads, steel wool or abrasives when cleaning nonstick pans.
• Ensure pans are either the same size or slightly larger than the heating area. If the pan is too small, not only is heat wasted but the pan will overheat and the handle may become damaged.

There is usually little difference in size from one manufacturer to another. Pans are measured across their tops, so 14cm will refer to the diameter. You may prefer to think in terms of capacity and, indeed, some of our ranges have inner capacity markings. While the capacity of individual ranges will vary according the shape, the following is a guide