Step 1

Put the potatoes in a large pot with 2 tablespoons of salt and cover by a few inches of cold water. Bring to a boil, cover and cook until a paring knife inserted in the center meets no resistance.

Step 2

Meanwhile, heat 2 tablespoons of the butter in a medium saucepan over medium heat. Whisk in the flour and cook 1 minute. Whisk in the hot milk and increase the heat to high, cooking until the milk has thickened and the flour taste has been cooked out, about 5 minutes. Remove from the heat and whisk in the Monterey Jack cheese until smooth and melted. Stir in the Parmigiano-Reggiano and poblano chile and season with salt and pepper.

Step 3

Drain the potatoes well, and then return to the pot over low heat to dry out. When the potatoes turn white and become dry, pass them through a ricer into a large glass bowl. Gently combine the potatoes with the remaining 6 tablespoons butter and the warm cream, using a wooden spoon. Season with salt and pepper.

Step 4

Make a well in the middle of the potatoes and fill with the cheese sauce. Garnish with cilantro and serve.