
This Bengali classic is pure comfort — tender Yukon Gold potatoes coated in a thick, nutty poppy seed paste that clings to every cube in the most satisfying way. The posto paste is the heart of the dish, made by soaking and grinding white poppy seeds with green chilies into a dense, opaque mixture that transforms into something almost creamy as it cooks down. Mustard oil does serious heavy lifting here, first tempered with nigella seeds and a dried red chili to build a fragrant, slightly smoky base, then finished with a raw drizzle at the end that gives the whole dish a peppery brightness. Everything on the ingredient list is naturally plant-based and completely free of poultry in any form, so there's no need to scrutinize labels or swap anything out. The technique is straightforward — sauté, coat, cover, and let the paste do its thing — but the result tastes deeply considered and layered. It's the kind of weeknight dish that feels like it came from someone's grandmother's kitchen, not a shortcut recipe. Serve it with steamed rice and a slit green chili on top for a meal that's simple, bold, and genuinely hard to stop eating.
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Place the white poppy seeds in a small bowl, cover with cold water, and soak for 30 minutes. Drain well.
Transfer the drained poppy seeds to a spice grinder or blender along with the 2 roughly chopped green chilies, 1/4 tsp salt, and 3 tbsp water. Grind to a smooth, thick paste, scraping down the sides as needed and adding water 1 tsp at a time only if the blades stall. The paste should be dense and opaque, not watery.
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