Cast iron holds heat best, aluminium heats up fastest and weighs the least, and stainless steel is the easiest to look after. For Indian cooking, cast iron suits dosa, roti and tadka. Aluminium suits quick everyday cooking, if it is anodised or coated. Steel suits boiling, storing and slow cooking. Here is how they compare.
At a glance
| Cast iron | Aluminium | Stainless steel | |
|---|---|---|---|
| Heats up | Slowly, then steadily | Very fast | Slowly and unevenly, unless it has an aluminium core |
| Holds heat | Very well | Poorly | Moderately |
| Weight | Heavy (lighter versions exist) | Light | Medium |
| Acidic food | Traditional cast iron can react; Kroslo's enamel is non-reactive with regular use | Bare aluminium reacts; anodised or coated does not | Does not react |
| Upkeep | Traditional needs regular oiling and drying | Bare scratches and dents; coated needs gentle care | Easy, but food can stick |
| Induction | Yes | Only with a magnetic base | Often yes, check the listing |
Cast iron
Good at: dosa, roti, parathas and deep frying. It holds heat, so the tawa does not cool down when the batter hits it, and dosas crisp up round after round. It also suits tadka and slow-cooked dishes.
Not so good at: being light. Traditional cast iron is heavy, and needs regular oiling and drying to avoid rust.
Worth knowing: enamelled cast iron, like Kroslo's Tironox range, has a fused enamel layer. Kroslo's pages describe it as lighter than traditional cast iron, rust resistant and non-reactive with regular use.
Aluminium
Good at: quick, light everyday cooking. It heats fast and is easy to lift.
Not so good at: holding heat, and handling acidic food. Bare aluminium reacts with tomato, tamarind and lemon, which can change the taste and the pan. Anodised aluminium, or aluminium coated or clad in another material, does not react. Bare aluminium also dents and warps more easily.
Stainless steel
Good at: boiling, steaming, storing and slow cooking. It is tough, does not react with food and is easy to clean.
Not so good at: spreading heat. Plain steel heats unevenly, so look for "tri-ply" or a base with an aluminium or copper core. Food also tends to stick.
Which one for which dish?
- Dosa, chilla, roti, paratha: cast iron.
- Tadka and bhuno: cast iron or a good steel kadai.
- Deep frying: cast iron or steel. Both hold oil temperature better than thin aluminium.
- Dal, rice, boiling: steel or aluminium (coated).
- Tomato-heavy gravies and tamarind dishes: steel or enamelled cast iron.
So which should you buy?
If you cook dosa or roti often and want one pan that lasts, choose cast iron. If you want a light everyday pan and don't mind coating care, choose coated or anodised aluminium. If you want the least upkeep and cook a lot of boiled or gravy dishes, choose stainless steel.
Most kitchens use all three. A cast iron tawa, a steel kadai and a coated aluminium pan is a very common mix.
Common mistakes
- Using bare aluminium for tamarind or tomato dishes. Rasam, sambar and tomato gravies are the usual culprits. Use steel or an enamelled pan for these.
- Buying plain steel for dosa. Without an aluminium or copper core, steel heats unevenly and dosa sticks.
- Ignoring the base on induction. Aluminium and some steel pans do not work unless the base is magnetic.
- Choosing by weight alone. A light pan is easy to lift but may not hold heat. A heavy one is steady but tiring. Look for the balance that suits you.
Cost and lifespan, in plain terms
Aluminium is usually the cheapest to buy and the shortest-lived. Stainless steel sits in the middle and lasts a long time. Cast iron costs more at first and can last many years with care, so you spend less per year of use. Kroslo's single pans start at ₹2,632 and carry a 5-year limited warranty.
What about non-stick?
Non-stick is a coating, not a metal. It can sit on top of aluminium or steel. For a dosa-specific comparison, see cast iron vs non-stick tawa.
FAQs
Is cast iron better than aluminium?
For heat holding and crisp dosa, yes. For weight and speed, aluminium wins. It depends on what you cook.
Is an aluminium kadai good for cooking?
Yes for quick dishes, if it is anodised or coated. Avoid cooking acidic food for a long time in bare aluminium.
Which is better, an iron kadai or a steel kadai?
Iron holds heat and suits tadka and frying. Steel is lower upkeep and suits gravies. Many people use both.
Which is better for dosa: cast iron, aluminium or steel?
Cast iron, because it holds heat so well. Aluminium works if it has a good coating. Steel tends to stick.
