1 ½ pounds potatoes, cut into ¾-inch chunks
Salt
3 tablespoon unsalted butter
1 ½ teaspoons curry powder
¼ teaspoon cayenne pepper
1 can chickpeas, rinsed and drained
½ cup Greek yogurt
¼ cup cilantro, chopped
2 tablespoon lime juice
1 jalapeno, thinly sliced