Potato & Sweet Potato Chaat (Aloo Shakarkandi Ki Chaat)

Frying in ghee rather than a neutral oil changes the flavour of the potato in a way that complements the sweet potato. Ghee's milk solids caramelise at relatively low temperatures, creating a complex, slightly nutty base note that no other fat provides. This richness is the foundation on which the sharp, sour, and spicy condiments play.

Black salt in chaat is not decorative. Its distinctive sulphurous quality directly triggers the savoury response the same way a squeeze of lime triggers sourness. The combination of black salt, tamarind water, and saunth in the same dish layers three different expressions of the same impulse: the need for contrast to balance the starchy sweetness of the main ingredients.

No ghee: Use neutral oil for a vegan version. The flavour will be different, cleaner but less round.

Roasted sweet potato: Roasting the sweet potato whole (at 200°C for 45 minutes) before cubing and adding produces a deeper, more concentrated sweetness than boiling.

Addition of papdi: Serving this chaat on a base of papdi (fried flour crackers) makes it more substantial.

Serve warm, immediately after tossing. This chaat works as a street-food-style snack before a meal, or as an afternoon snack with chai. In the North Indian tradition, it is most associated with winter markets and seasonal fairs.

Best eaten immediately. Leftovers can be refrigerated but the potato loses its crispness. Rewarm in a dry pan.

Aloo shakarkandi ki chaat (आलू शकरकंदी की चाट, "potato and sweet potato chaat") is the North Indian winter street snack of boiled potato and roasted sweet potato cut into rough chunks, tossed with chaat masala, lemon juice, black salt, chopped green chili, and a small handful of chopped cilantro, served warm. The dish is among the canonical Delhi-UP winter street foods, sold from the rolling carts of street vendors who appear in the cold months from November through February. The sweet potato roasting tradition specifically (the vendor roasts whole sweet potatoes over a coal brazier on the cart, peels them while still hot, and assembles the chaat to order) is one of the iconic Old Delhi street food images.

The winter context defines the dish's cultural role. Sweet potato (shakarkandi) is a winter root vegetable in India, harvested in the cool months and unavailable in the hot summer when most North Indian streets are dominated by other chaat preparations (pani puri, bhel puri, jhal muri). The seasonal availability gives shakarkandi chaat its specifically winter identity, and the dish's warming character (warm roasted sweet potato, the heat-generating effect of the spices, the cold-weather appeal of standing at a hot brazier on a chilly evening) suits the cold Delhi winter when daytime temperatures can drop into the single digits Celsius. The street vendors who specialize in shakarkandi chaat operate only during the winter months, packing up their carts when summer arrives and the sweet potato disappears from the markets.

The technique is fast and the spice mix matters more than precise quantities. Sweet potatoes (about a pound) are roasted directly on hot coals or in a hot oven (200°C for thirty to forty minutes) until the skins blacken slightly and the interiors become soft and sweet. Potatoes are boiled in salted water until tender (about twenty minutes), drained, and cooled. Both are peeled while still warm, cut into rough one-inch chunks, and combined in a serving bowl. The seasoning is added in this order: a generous shake of chaat masala, a pinch of black salt, a pinch of red chili powder, chopped green chili, finely chopped fresh ginger, and the juice of half a lime. The chaat is tossed gently to coat, scattered with chopped cilantro, and served warm in small bowls or in paper cones (the cone shape called thonga in Hindi street-food vocabulary). The dish is eaten standing at the cart, with a small steel toothpick or a small spoon, while the vendor prepares the next order on the brazier.