Aloo Achar (Nepali Spicy Sesame Potato Salad)

There is aloo curry, and then there is aloo achar. The first is a hot, gravied potato dish you eat with rice; the second is a cool, tangy, sesame-rich salad that lives at room temperature on every Newari khaja platter and every dal-bhat side plate worth eating. The two are completely different things and should not be confused.

What makes aloo achar distinctly Nepali, not Indian, not Pakistani, not anything else, is the til ko peeko (toasted sesame paste). It is what gives the dish its faintly nutty, almost creamy weight, and it is the one ingredient you cannot skip without losing the dish entirely. Add to that a generous slick of bloomed mustard oil, fresh lemon, ginger, garlic, and a fresh green chili, and you have the salad that anchors the Newari khaja set, pairs with chicken sekuwa, and shows up at every Nepali picnic on earth.

Ingredients

• 600 g waxy potatoes (Yukon gold or red, about 4 medium), peeled and cubed into 3/4-inch pieces
• 1.5 teaspoons salt, divided
• 1/3 cup white sesame seeds (til)
• 3 tablespoons mustard oil
• 1/2 teaspoon methi (fenugreek) seeds, optional but traditional
• 1/4 teaspoon turmeric powder
• 1 teaspoon ground cumin (toasted, if you can)
• 1 small red onion, finely chopped
• 1 tablespoon fresh ginger, finely minced
• 2 cloves garlic, finely minced
• 1 fresh green chili, finely chopped (more or less to taste)
• 3 tablespoons fresh lemon juice (about 1 large lemon)
• 1/4 teaspoon ground timur (Nepali Sichuan pepper), optional but signature
• 3 tablespoons fresh cilantro, chopped
• 2 tablespoons roasted peanuts, lightly crushed (optional, for crunch)

Instructions

1. Boil the potatoes: Place the cubed potatoes in a saucepan, cover with cold water by an inch, add 1 teaspoon of salt, and bring to a boil. Reduce the heat and simmer for 10–12 minutes, until the potatoes are just tender when pierced with a knife but still hold their shape, overcooked potatoes will turn the salad to mash. Drain and let them steam-dry in the colander for 5 minutes; this matters for the dressing to cling.

2. Toast the sesame seeds: While the potatoes cook, place the sesame seeds in a dry skillet over medium heat. Toast, stirring constantly, for 3–4 minutes until they turn pale gold and smell deeply nutty. Tip onto a plate to stop the cooking. Once cool enough to touch, grind them in a mortar and pestle (or a clean spice grinder) to a coarse, slightly oily paste, the natural oils should bind the seeds into a sandy paste, not a powder. This is til ko peeko.

3. Bloom the mustard oil: In a small pan over medium-high heat, warm the mustard oil until it just begins to smoke and the raw bitterness lifts off. Reduce the heat to low, add the methi seeds (if using), and let them sizzle for 5–10 seconds until they turn dark golden. Remove from the heat and stir in the turmeric, it will bloom and turn the oil bright yellow. Let cool to lukewarm.

4. Build the dressing: In a large mixing bowl, combine the warm sesame paste, the bloomed mustard oil (with its methi and turmeric), the ground cumin, the lemon juice, the timur, and 1/2 teaspoon of salt. Whisk briefly to bring it together, the dressing should look glossy and a little grainy.

5. Toss while warm: Add the still-warm potatoes to the bowl along with the chopped onion, ginger, garlic, and green chili. Fold gently with a flexible spatula or your hands, gently is the word; the potatoes are tender and you want to coat them, not crush them. Warm potatoes drink up dressing better than cold ones, so work fairly quickly.

6. Rest and finish: Let the salad sit for at least 15 minutes at room temperature so the flavors marry. Just before serving, taste and adjust salt and lemon, it should taste bright, salty, nutty, and slightly numbing on the tongue. Top with the chopped cilantro and the crushed peanuts (if using).

Serving suggestions

Serve at room temperature. Aloo achar is one of those dishes that is actually better the next day, after a night in the fridge to let the sesame and mustard oil settle into the potatoes, bring back to room temperature before serving.

It is at its best:

• As the centerpiece of a Newari khaja set, alongside bara, chicken choila, and bhatmas sadheko.
• As a side to daal bhat, the cooling tang cuts the richness of dal and meat curry beautifully.
• As a picnic salad alongside chicken sekuwa skewers.
• Spooned onto a plate of warm sel roti for a sweet-and-sour Tihar treat.

Notes

• Sesame paste shortcut: If you do not have a mortar or grinder, ready-made unsweetened tahini works in a pinch, use 3 tablespoons. The flavor is slightly different but recognizably Nepali.
• Mustard oil non-negotiable: Olive oil, coconut oil, or vegetable oil will give you a salad, but not aloo achar. The peppery mustard is the entire point.
• Spice your way: Some Newari families add a teaspoon of jhanne-style chili-mustard paste; others throw in a small pinch of asafoetida (hing) with the methi seeds for extra depth. Both are good.