1 c. plain whole-milk yogurt (Don't substitute low-fat yogurt)
Minced fresh coriander or mint, for garnish
Heat oil in a 10-inch skillet over high heat. Stir in mustard and caraway seeds and cook until mustard seed begins to pop, about 1 minute. Reduce heat to low and add onion, garlic, ginger, chile, turmeric, cumin, salt and pepper and cook 3 to 5 minutes, or until highly fragrant (if mustard seeds continue to pop, cover the pan as the spices cook). Remove from the heat and cover.
Cook the unpeeled potatoes as directed at left in water to cover with the 2 tablespoons of salt. Drain, run cold water over the potatoes for about 2 minutes, or until cool enough to handle. Peel and cut into them into 1-inch pieces.
Heat the spice mixture over medium high. As soon as it is hot, stir in the potatoes, and gently stir until coated with spice mixture. Taste for seasoning and turn into a serving bowl. Squeeze lime over the potato, then fold in the yogurt.