Most mixer grinders sold in India come with three jars, sometimes four. They look similar, but the jar shape and the blade underneath decide whether your masala turns out fine or your chutney stays chunky. Here’s what each one is for.
The standard jars
| Jar | Typical size | Best for | Avoid |
|---|---|---|---|
| Large (wet / liquidising) | 1.5 L or more | Idli-dosa batter, gravies, tomato purée, lassi, buttermilk, smoothies | Small amounts of dry spices |
| Medium (dry / multipurpose) | About 1 L | Garam masala, sambar powder, rava, sugar, coffee, small batter batches | Large quantities of liquid |
| Small (chutney) | About 0.4–0.5 L | Coconut chutney, green chutney, ginger-garlic paste, small spice batches | Anything that needs a lot of room to move |
| Juicer jar (if included) | Varies | Fresh juice, with a filter to separate pulp | Hard grinding jobs |
Sizes vary by model, so check your own jars. If you’re still choosing a mixer grinder, our wattage guide explains how many jars most homes need.
The blades, and why they differ
Blades aren’t interchangeable in practice. Each set is shaped to work with its jar.
- Wet-grinding blades (large jar): usually wider and set to pull the contents down into a vortex. They’re designed to work with liquid, so the mixture keeps circulating.
- Dry-grinding blades (medium jar): usually sharper and closer to the base, for chopping hard, dry ingredients like whole spices and dal into fine powder.
- Chutney blades (small jar): compact blades for small quantities. Because the jar is narrow, the ingredients stay close to the blades.
- Whipper or blending attachment (on some models): a blunt disc or paddle for whisking buttermilk, lassi or churning butter from cream, rather than chopping.
Many steel jars also have flow breakers: raised ridges on the inside wall. They break up the swirl so ingredients fall back onto the blades instead of spinning round the edges. They help most with thick mixtures like batter and chutney.
How much to fill each jar
Overfilling is the most common reason for poor results and overheating.
| Jar | Wet ingredients | Dry ingredients |
|---|---|---|
| Large | About half full for thick batter; up to the max mark for thin liquids like buttermilk | Not ideal |
| Medium | About half full | About a third to half full |
| Small | About half full | A few tablespoons |
For thick wet grinding, less is more. A half-full jar grinds faster and finer than a full one.
Jar-by-jar tips for Indian cooking
Large jar
- For idli and dosa batter, use ice-cold water and grind urad dal and rice separately. Our idli and dosa batter guide has the full method.
- For gravies, let onion-tomato masala cool before grinding. Hot liquids build steam and can push the lid off.
Medium dry jar
- Make sure the jar is completely dry. Even a few drops make masala clump.
- Cool roasted spices before grinding. They grind better and the jar won’t get as hot.
- Grind hard spices like turmeric, cinnamon or dried chillies in short pulses. Store the powder in your masala dabba or an airtight jar.
Small chutney jar
- For coconut chutney, add a spoonful of water or curd so it moves.
- Pulse, scrape down, pulse again.
- For ginger-garlic paste, a little oil or water helps it grind smooth and keeps it fresher.
The parts that wear out
A jar isn’t just a container. Underneath, each jar has a few parts that wear with use.
- Coupler: the toothed piece that connects the jar to the motor. The jar’s coupler and the motor’s coupler mesh together. If the motor runs but the blades don’t turn, a worn coupler is a common cause.
- Gasket (sealing ring): the rubber ring that seals the blade assembly or lid. A worn or missing gasket is a common cause of leaks.
- Blade assembly and bearing: the blades sit on a shaft running through a bearing in the jar base. If a jar starts to grind noisily or the blade feels stiff or wobbly, the assembly may need replacing.
Replacement jars, couplers and gaskets are usually available from authorised service centres. Using parts made for your model helps the jar lock and run properly. For more on leaks, noise and other faults, see mixer grinder problems and fixes.
Cleaning and care
- Rinse soon after use, especially after turmeric or batter, which stain and set.
- Don’t soak the jar base in water for long. Water can get into the bearing.
- Clean around the blades carefully with a brush, not your fingers.
- To loosen stuck-on residue, run the jar briefly with warm water and a drop of dishwashing liquid, then rinse.
- Dry jars upside down and fully before storing, particularly the dry jar.
- Check your manual before putting jars in a dishwasher.
Which jar for which job: quick reference
| Task | Jar |
|---|---|
| Idli, dosa, appam batter | Large |
| Onion-tomato gravy base | Large |
| Lassi, buttermilk, milkshake | Large (or whipper attachment) |
| Garam masala, sambar powder, rasam powder | Medium |
| Powdered sugar, rava, oats | Medium |
| Coconut or mint chutney | Small |
| Ginger-garlic paste | Small |
| Juice with pulp separated | Juicer jar |
Bottom line
Match the jar to the job: large for wet, medium for dry, small for chutneys. Keep jars about half full, keep the dry jar truly dry, and look after the coupler and gasket. Do that, and even a basic three-jar mixer grinder will handle almost everything an Indian kitchen needs.
Frequently asked questions
Which mixer grinder jar is best for idli batter?
The large wet-grinding or liquidising jar, usually 1.5 litres or more. Fill it no more than about half with soaked dal or rice, and grind in batches with cold water.
Can I grind dry spices in the wet jar?
You can, but results are usually coarser because the wet blade and wide jar aren't designed for small dry quantities. The medium dry jar with its sharper blade gives a finer masala.
Why does the small chutney jar leave whole pieces?
Usually because it's overfilled or too dry. Fill it no more than about half, add a spoonful of water, curd or oil for wet chutneys, and pulse while scraping down the sides.
Can I wash mixer grinder jars in a dishwasher?
Check your manual. Many manufacturers advise against it, because water and detergent can get into the bearing under the blade. Washing by hand and drying upside down is the safer option.
