After a few weeks of cooking chaat, you start to see the same four faces in every recipe. Green chutney is there, and so is tamarind chutney, a dry garlic powder, and plain yogurt. They take turns leading in pani puri, bhel puri, sev puri, dahi puri and vada pav, and the only real difference is who gets the most spoonfuls. None of the four is difficult. The trouble starts when a chutney tastes off and you have no idea why. Knowing the role each one plays turns that moment into a quick correction instead of a do-over.
Green chutney: herbal heat and freshness
Blend a big bunch of mint and coriander with green chillies, a knob of ginger, salt and something sour, which is usually lemon juice, though raw mango or tamarind will do. What you get is leafy, raw heat, a freshness that no cooked masala can imitate. Here is a habit worth copying: blend it thick, then thin it with water only when you serve. Extra water at the start dulls both colour and taste. A little sugar softens the chilli without making the sauce sweet. In a closed container in the refrigerator, it lasts three to four days, though the bright green slips by day two, and a few drops of lemon help it hang on. When the chutney tastes dull, think salt and acid before you reach for more chillies. Those two are the usual cause.
Tamarind-date chutney: the sweet-sour backbone
This is the dark, glossy sauce that gives bhel puri, sev puri and dahi puri their mellow sweetness. Simmer tamarind pulp with dates or jaggery, roasted cumin, perhaps dry ginger and a little red chilli, and keep going until it reduces to a syrup you can spoon. Do not hurry the pot. A slow simmer breaks the dates down completely and lets the tamarind's sourness fold into the sugar. Test the thickness on the back of a spoon. It should coat and cling, nearer to thin syrup than jam. Sugar and acid keep it safe for two to three weeks in the refrigerator, so this is one chutney worth cooking in bulk. Too sour? Add more jaggery and simmer a little longer. Too sweet and heavy? Whisk in tamarind pulp or a squeeze of lemon.
Dry garlic chutney: pungent crunch
If you have eaten a vada pav in Mumbai, you have tasted this one: the red, crumbly powder pressed inside the bun. It is dry, not a paste. Roasted garlic is pounded with dried red chillies and salt, often with desiccated coconut or sesame for body, until a pinch rubbed between your fingers falls apart instead of sticking. Roasting the garlic first, in a dry pan or in a touch of oil, softens its raw bite into something deeper while keeping it strong. With no water in the mix, it keeps for a month in an airtight tin on the counter, longer in the refrigerator, which is why vada pav sellers stock it in large tubs. It is as much about texture as taste. A spoonful smeared in a bun or scattered over chaat adds a gritty, sharp edge that wakes up soft potato and bread.
Yogurt: cooling creaminess, not an afterthought
It is easy to see yogurt as decoration, but think of raita next to a fiery curry and you will see its role. On chaat it cools the heat of green chutney, rounds off tamarind's sourness and softens the saltiness of sev. Whisk it until it is entirely smooth, then loosen it with a splash of milk or water so it pours. A stiff dollop sits on top like a lid. Season it as well, with a little salt and sugar, before you start plating. Unseasoned yogurt tastes flat and slightly tart next to the other sauces. Use it the same day if you can, because whisked yogurt keeps turning sourer as time passes.
How the four work as a system
Nobody puts all four at full volume on one plate. Cooking chaat well means deciding who leads. Pani puri leans on green chutney stirred into the water, with a tamarind water for anyone who prefers less heat. Bhel puri and sev puri put tamarind in front and use green as an accent, because too much green turns a snack into a herb salad. In dahi puri, yogurt leads and the two chutneys appear only as thin drizzles. Vada pav stands apart, built on dry garlic chutney, with some green chutney on the bun and almost no tamarind. Treat the four as a small team and you can fix a plate by ear. If it is one-note sour, add tamarind. If it tastes flat, add green. If it is harsh, add yogurt. If it needs grit and savour, reach for the garlic powder.
Storage and make-ahead sense
Because each keeps for a different length of time, it is better to prepare them on separate days than to make everything in a panic before dinner. Garlic powder and tamarind-date chutney reward large batches, since they stay good for weeks with almost no change. Green chutney is best made a day or two ahead at most. Season yogurt just before serving. Keep all four in small lidded containers in the refrigerator and chaat becomes an assembly job instead of a cooking project, which is how stalls and home kitchens serve a full spread so quickly.