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1
Place the oven rack to upper middle position and preheat to 400F (200C).
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2
Scrub the potatoes, pat them dry with paper towel or clean kitchen towel, and rub the skin all lover with olive oil.
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3
Place oiled potatoes onto a large baking sheet with foil or baking mat.
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4
Bake the potatoes until the skin is very brown and crispy and a wooden stick can go through the skin easily, 55 to 65 minutes.
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5
Meanwhile heat the olive oil in a medium nonstick skillet over medium high heat until hot.
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6
Add the onion, stirring often, and cook until the onions are browned, about 8 minutes.
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7
Stir in garlic, ginger and all the spices, and cook for another 2 to 3 minutes, until well mixed and very fragrant.
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8
Stir in peas, and cook for about 2 minutes, until peas become bright green.
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9
Season with salt and black pepper to taste.
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10
Remove from the heat and set the mixture aside.
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11
Use an oven mitt to touch the hot potatoes, place the potatoes long side down, cut the potatoes into the half lengthwise from the narrower side.
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12
Scoop the flesh into a bowl with a dinner spoon, only about 1/4 inch thick flesh is attached to the potato shell.
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13
Place the now-empty potato shells on the same baking sheet, put it back to the oven, continue cooking the shells for 8 to 12 minutes, until the shells become a bit crispy and dry.
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14
While the shells are in the oven, mash the potato flesh with potato masher or the back of a fork until very smooth, stir in the yogurt, buttermilk and scallions until well mixed.
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15
Add the onion-pea mixture into mashed potatoes, and stir until well mixed.
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16
Season to taste with salt and black pepper.
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17
When the shells are done in the oven, remove them from the oven, then switch the oven to broil.
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18
Spoon the potato mixture into the shells that are hold by your kitchen mitt, piling up the center a little bit higher.
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19
Broil in the oven until crisp on top, and brown at the spots, 5 to 10 minutes, depending on how hot your broiler is.
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20
Remove from the oven and let cool for a few minutes.
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21
Serve with yogurt and hot sauce if desired.
