Asparagus Potato Chowder


Serves 6 -8

This is a creamy and delicious version of potato chowder and the asparagus adds so much to the soup, both in flavor and in nutrition. I love the sweet creaminess from the mascarpone.

1-1/2 pounds medium-thick asparagus
2 large sweet onions, 1 quartered and 1 finely chopped
Kosher salt
1/2 cup heavy cream
1 tablespoon cornstarch
3 tablespoons unsalted butter
1 medium clove garlic, minced
1 teaspoon Dijon mustard, preferably grainy country-style
1/4 cup dry white wine
1 pound Yukon Gold potatoes, peeled and cut into 1/2 -inch dice (about 3 cups)
6 ounces (3/4 cup) mascarpone, at room temperature
1 tablespoon chopped fresh dill, plus fronds for garnish
Freshly ground black pepper

Trim the woody ends from the asparagus and put them in a 4-quart saucepan. Add the quartered onion, 1 tsp. salt, and 8 cups of water. Bring to a boil, then turn the heat down and simmer until the broth is reduced to 5 cups, 25 to 30 minutes.
Meanwhile, separate the asparagus tips from the stalks. Halve each tip lengthwise and cut the stalks crosswise 1/2 inch thick; set aside. In a small bowl, whisk the cream and cornstarch.
Strain the broth into a bowl. Wipe out the saucepan.
Melt the butter in the saucepan over medium-high heat, add the chopped onion, and cook, stirring occasionally, until beginning to brown, 6 to 10 minutes. Add the garlic and mustard and cook, stirring, for 30 seconds. Add the wine and cook, stirring, until almost evaporated, about 1 minute. Add the broth, potatoes, and 1 tsp. salt. Bring to a boil, then turn the heat down and simmer until the potatoes are tender when pierced with a fork, 6 to 9 minutes. Using a potato masher or fork, gently mash about half of the potatoes against the sides and bottom of the saucepan.
Whisk the mascarpone into the chowder and bring to a bare simmer over medium-low heat. Whisk in the cornstarch mixture and continue to gently simmer, whisking, until the chowder is slightly thickened, about 2 minutes. Add the asparagus tips and stalks, and cook until bright green and just tender, 2 to 3 minutes. Remove from the heat and stir in the chopped dill, 1 tsp. salt, and 1 tsp. pepper. Season to taste with more salt and pepper, and serve garnished with the dill fronds.

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