Kanji Recipe: How to Make Gajar Kanji at Home

What Is Gajar Kanji?

Gajar kanji is a classic North Indian fermented drink made in winter. It uses black carrots, mustard seeds, water, and salt. Many homes call it kali gajar ki kanji. It tastes tangy, sharp, and lightly spicy. When it ferments well, it is full of lactic acid bacteria. This kanji recipe makes about 2 liters.

This drink is especially popular in Punjab, Haryana, Rajasthan, Uttar Pradesh, and Delhi-NCR. It is often made when black carrots are in season. In many Indian markets, black carrots are seen during winter months. The drink is simple, rustic, and full of old-school flavor.

People enjoy kanji as a refreshing side drink. It is also served with snacks like chaat, pakora, mathri, and samosa. Some families drink it with lunch in winter. Others serve it chilled in small glasses during snack time.

How to Make Kanji at Home: The Short Answer

Kanji is a sour North Indian drink made by fermenting black carrots in salted water with crushed mustard seeds (rai). To make kanji at home, put carrot sticks, coarse rai and salt in a clean glass jar. Add 2 liters of boiled and cooled water. Cover the jar loosely and keep it in a warm place for 3 to 5 days, until it tastes sour.

A lab study shows why this works. In a Punjab Agricultural University study, black carrot kanji fermented at room temperature for 5 days dropped from pH 6 to pH 3.47. Lactic acid bacteria grew from 3.96 to 8.33 log CFU per ml in the same study. That sourness comes from the bacteria.

Kanji is sometimes spelled kangi. In Hindi it is called gajar ki kanji. The kanji banane ka tarika (method) and kanji banane ki vidhi (recipe) are the same 6 steps below, in English and in Hindi.

कांजी कैसे बनाते हैं? (How to Make Kanji in Hindi)

कांजी बनाने के लिए 500 से 700 ग्राम काली गाजर, 2 लीटर उबालकर ठंडा किया हुआ पानी, 2 से 3 बड़े चम्मच दरदरी पिसी पीली सरसों (राई) और 2 से 4 छोटे चम्मच नमक लें। सब कुछ एक साफ़ कांच के जार में मिलाएँ। जार को ढीला ढककर गर्म जगह पर रखें। 3 से 5 दिन में कांजी खट्टी हो जाती है।

In English: To make kanji, take 500 to 700 grams of black carrots, 2 liters of boiled and cooled water, 2 to 3 tablespoons of coarsely ground yellow mustard seeds (rai) and 2 to 4 teaspoons of salt. Mix everything in a clean glass jar. Cover the jar loosely and keep it in a warm place. The kanji turns sour in 3 to 5 days.

गाजर की कांजी बनाने की विधि (6 स्टेप)

1. काली गाजर को अच्छी तरह धोएँ और छीलें। फिर 1.5 से 2 इंच लंबी स्टिक में काटें।
2. 2 से 3 बड़े चम्मच पीली सरसों को दरदरा कूट लें। बारीक पाउडर न बनाएँ।
3. 2 लीटर पानी उबालें। फिर उसे पूरी तरह ठंडा होने दें।
4. साफ़ जार में गाजर, पिसी सरसों और नमक डालें। चाहें तो हींग, लाल मिर्च पाउडर या हल्दी भी डालें। ठंडा पानी डालकर साफ़ चम्मच से मिलाएँ। गाजर पूरी तरह पानी में डूबी रहनी चाहिए।
5. जार को मलमल के कपड़े या ढीले ढक्कन से ढकें। कसकर बंद न करें। जार को धूप वाली या गर्म जगह पर रखें। रोज़ एक या दो बार साफ़ चम्मच से हिलाएँ।
6. गर्म मौसम में कांजी 3 से 4 दिन में तैयार होती है। ठंड में 4 से 7 दिन लग सकते हैं। जब स्वाद खट्टा और तीखा हो जाए, तो जार को फ्रिज में रखें।

ध्यान दें: अगर ऊपर रोएँदार फफूंद दिखे या सड़ी हुई गंध आए, तो पूरी कांजी फेंक दें।

In English: If you see fuzzy mould on top or smell something rotten, throw the whole batch away.

Why Black Carrot Is Special

Black carrot is the heart of traditional gajar kanji. It gives the drink its deep color and earthy taste. It also adds a winter-only charm that many families look forward to every year.

Black carrots are not always easy to find. They are seasonal, so the recipe feels extra special. Their color is strong, and they make the kanji look beautiful after fermentation. The drink turns a deep purple-red shade that feels very traditional.

If black carrots are not available, some people use orange carrots with beetroot. That version tastes nice too. Still, the classic winter version uses black carrots whenever possible.

Ingredients You Need

For about 2 liters of kanji, gather these ingredients:

• Black carrots, 500 g to 700 g
• Water, 2 liters
• Yellow mustard seeds or rai, 2 to 3 tablespoons
• Salt, 2 to 4 teaspoons, to taste
• Optional hing, 1/4 to 1/2 teaspoon
• Optional red chili powder, 1/2 teaspoon
• Optional turmeric, 1/2 teaspoon
• Optional beetroot slices, if black carrots are unavailable

Use clean ingredients and a clean jar. Fermented drinks depend on hygiene. A small mistake in cleaning can spoil the batch.

Do not cut the salt below this range. The National Center for Home Food Preservation says salt helps the good bacteria grow and holds back others. Plain salt with no additives works best.

Equipment Needed

• Clean glass jar or food-grade stoneware jar
• Muslin cloth or a loose lid
• Clean spoon
• Grinder or mortar for mustard seeds

A glass jar is the best choice. A food-grade stoneware jar also works. Stainless steel is safe too. Do not use brass, copper, iron or zinc pots. The NCHFP pickle guide says these metals can darken pickles. Wash the jar in hot soapy water and rinse it with very hot water before use.

Step-by-Step Gajar Kanji Recipe

Step 1: Wash and cut the carrots

Wash the black carrots very well. Peel them after washing. Cut them into finger-length sticks. Keep each piece around 1.5 to 2 inches long.

Do not cut the pieces too thin. Thick sticks hold shape better during fermentation. They also give a better bite when the kanji is ready.

Step 2: Grind the mustard seeds

Take 2 to 3 tablespoons of yellow mustard seeds. Crush them coarsely. You can use a grinder or mortar and pestle.

Do not make a fine powder. Coarse mustard gives a stronger traditional taste. It also blends well without making the drink too cloudy.

Step 3: Prepare the water

The safest method is to boil 2 liters of water. Once it boils, switch off the heat. Let the water cool fully before using it.

This step helps reduce unwanted germs. It also gives peace of mind, especially in Indian homes where water quality can vary by area. The Punjab Agricultural University kanji studies also used boiled and cooled water.

Some people use clean filtered water without boiling. That can work if the water is safe and the jar is very clean. But boiling is still the better home method.

Step 4: Mix everything in the jar

Take the clean jar. Add the carrot sticks first. Then add the ground mustard seeds. Add salt next. If using hing, red chili powder, or turmeric, add them now.

Pour in the cooled water. Stir with a clean spoon. Mix well so the salt and mustard spread evenly through the jar.

Make sure the carrots are fully submerged. If needed, press them down with a clean spoon. Leave some space at the top of the jar for fermentation bubbles.

Step 5: Cover and ferment

Cover the jar with a muslin cloth or a loose lid. Do not seal it tightly. Gas forms during fermentation, and the gas needs a way out.

Keep the jar in a sunny place or a warm corner of your kitchen. In India, many families place it near a window or on a balcony in winter sunlight.

Stir or gently swirl the jar once or twice daily. Always use a clean spoon if you are stirring. This helps the spices mix well and reduces uneven fermentation.

Step 6: Wait for 3 to 5 days

In warm weather, kanji may be ready in 3 to 4 days. In cooler winter weather, it may take 4 to 7 days. The exact time depends on the temperature and sunlight.

Do not rush it. Let the drink develop its sour taste slowly. A properly fermented kanji tastes sharp, tangy, and a little spicy. The color also becomes richer as the days pass.

How To Know Kanji Is Ready

You will know the kanji is ready when the smell, taste, and color change together. The drink should taste sour and refreshing. The mustard should feel mellow, not raw and harsh.

The color should deepen into a dark purple-red shade. The carrots may also look slightly softened. The liquid may become a little cloudy, which is normal.

If it still tastes flat after 3 days, leave it for another day or two. Winter fermentation often needs more time than summer fermentation.

Best Fermentation Tips

What The Final Kanji Should Taste Like

A good kanji tastes sour, salty, and lightly pungent. It should not taste raw or bitter. The mustard gives it a strong edge, but the flavor should still feel balanced.

The carrots should remain slightly crunchy. They should not turn mushy. The drink should feel cooling and lively, especially when served chilled.

If you like bolder flavor, let it ferment one day longer. If you like a softer taste, refrigerate it sooner once it turns tangy.

Kanji Versions Comparison

Health Benefits Of Gajar Kanji

Kanji is popular not only for taste, but also for its traditional wellness appeal. When fermented properly, it is rich in lactic acid bacteria. In the Punjab Agricultural University study, the authors called kanji a potential plant-based probiotic. That study was done in a lab, not in people. So enjoy kanji as a tasty fermented drink, not as a medicine.

Mustard seeds add a sharp flavor and are used in Indian kitchens for digestion-friendly recipes. Carrots bring natural color and plant compounds. In winter, many people find kanji comforting and light on the stomach.

It is also a good homemade drink option because it uses basic ingredients. There is no need for packaged syrups or artificial flavors. That makes it a simple winter refreshment for many Indian homes.

When to Throw Kanji Away: Safety Signs

Troubleshooting Common Problems

Problem: Kanji is not sour enough

It likely needs more time. Keep it in a warmer place. Stir it daily. Wait one or two more days before checking again.

Problem: Kanji smells too sharp too fast

Too much mustard or too much heat may be the reason. Next time, reduce mustard slightly. Keep the jar in a less hot spot.

Problem: White layer forms on top

A thin white layer can happen sometimes during fermentation. A smooth white or grey film that is not fuzzy is usually yeast, often called kahm yeast. Skim it off with a clean spoon. Fuzzy spots that are green, blue, brown or black are mould. UC Davis food safety experts say to throw away a ferment with mould. For more on this, read White Fungus on Pickle: Why It Happens, Is It Safe, How to Remove It.

Problem: Carrots became soft

That usually happens when the pieces are too thin or fermented too long. Cut thicker sticks next time. Check the kanji earlier if the weather is warm.

Problem: Kanji tastes bitter

Very fine mustard powder or old mustard seeds can cause bitterness. Use fresh mustard seeds and grind them coarsely. Do not over-ferment in hot weather.

Storage And Serving Tips

Once the kanji tastes right, move it to the refrigerator. Cold storage slows fermentation. It also keeps the flavor stable for a few more days. Punjab Agricultural University researchers note that home-style kanji can pick up unwanted microbes if it is stored for a long time.

Serve it chilled or at cool room temperature. Use a clean ladle or spoon each time. Do not dip used cups into the jar.

It pairs well with Indian winter snacks. Try it with mathri, aloo tikki, pakora, kachori, or chana chaat. It also works well before lunch on a warm afternoon.

Popular Indian Variations

Many homes make kanji a little differently. Some add beetroot for extra color. Some use black salt instead of regular salt. Some add hing for a deeper savory taste.

In some Punjabi households, the kanji is quite bold and mustard-heavy. In other homes, the flavor is gentler. You can adjust salt and mustard to match your taste.

If you like a brighter look, add a few beetroot slices. If you want a more traditional taste, keep the recipe simple with black carrots, rai, water, and salt only.

Serving Ideas For Indian Homes

Serve kanji in small glasses as a starter drink. It can be a lovely winter side drink before meals. Some people also enjoy it with lunch because it feels light and refreshing.

You can garnish each glass with a few carrot sticks from the jar. A tiny pinch of roasted cumin is optional, though not traditional in all homes. Keep the serving simple for the best classic taste.

Frequently Asked Questions

1. Can I make kanji without black carrots?

Yes. You can use orange carrots with a little beetroot. The color will be different, but the drink will still taste good.

2. How many days does gajar kanji take to ferment?

Usually 3 to 5 days. In colder weather, it may take up to 7 days. Keep checking taste and smell daily.

3. Can I use white salt instead of sendha namak?

Yes. Plain salt with no additives works best. Illinois Extension says iodized salt may slow fermentation and brown the vegetables. Salt with an anti-caking agent can make the liquid cloudy. Sendha namak is also common in Indian homes, especially during fasting seasons.

4. Should I boil the water before making kanji?

Boiling is a safer home method. It helps reduce contamination risk. After boiling, let the water cool before adding it to the jar.

5. How long can I store kanji in the fridge?

It usually stays good for a few days in the refrigerator. Always use a clean spoon and check the smell before serving.

6. Can I use orange carrots for kanji?

Yes. Orange carrot kanji is lighter in color and milder in taste. Black carrots give the deep purple color of classic kanji.

7. Why does my kanji smell bad?

Good kanji smells sour and sharp. A rotten or putrid smell means the batch has failed. Throw it away and do not taste it.

8. Can kids drink kanji?

Kanji has no caffeine. But fermentation can make some alcohol along with acids and gas, and kanji is salty and spicy. If you give it to kids, serve a small glass and use less chilli powder.

9. Where can I buy black carrots?

Look for black carrots at your local vegetable market in winter. They are sold for only a short time each year, and supply changes by city. If you cannot find them, use orange carrots with a little beetroot.

10. Kanji kaise banti hai?

Kanji kali gajar, rai, namak aur ubale hue thande paani se banti hai. Gajar ki sticks, dardari pisi rai aur namak ko saaf jar mein paani ke saath milaayein. Jar ko dheela dhakein aur 3 se 5 din garam jagah par rakhein. In English: kanji is made from black carrots, mustard seeds, salt and boiled, cooled water, kept in a warm place for 3 to 5 days.

11. कांजी बनाने का तरीका क्या है?

काली गाजर को धोकर, छीलकर लंबी स्टिक में काटें। साफ़ कांच के जार में गाजर, दरदरी पिसी राई, नमक और 2 लीटर उबालकर ठंडा किया हुआ पानी डालें। जार को ढीला ढककर गर्म जगह पर रखें, रोज़ हिलाएँ और 3 से 5 दिन में खट्टा होने पर फ्रिज में रखें।

Sources

• Sharma C, Sahota PP, Kaur S. Physicochemical and microbiological evaluation of antioxidant-rich traditional black carrot beverage: Kanji. Bull Natl Res Cent 2021;45:143 (PMID 34393474). Punjab Agricultural University; 5-day ferment, pH 6 to 3.47, lactic acid bacteria 3.96 to 8.33 log CFU per ml.
• Kaur P et al. Development and standardization of processing technique for ready-to-use lab fermented Kanji mix. Sci Rep 2023;13:185 (PMID 36604588). Short black carrot season; contamination risk during long storage.
• NCHFP, Suitable Containers, Covers, and Weights for Fermenting Food. Glass and food-grade containers; washing the jar.
• NCHFP, Causes and Possible Solutions for Problems with Fermented Pickles. Safe and unsafe metals; soft or slippery pickles.
• NCHFP, General Information on Fermenting. Why salt matters for safety.
• NCHFP, Fermenting. Fermentation makes acids, alcohol and gases.
• University of Illinois Extension, Fermenting FAQ. Kahm yeast, spoiled smell, salt types.
• UC Davis, Common issues with fermented fruits and vegetables (2022). Mould, yeast film, putrid smell.