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1
Drain beans and barley and set aside.
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2
Place mushrooms in a bowl and pour boiling water on top.
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3
Cover and set aside until mushrooms are soft, about 10 minutes.
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4
Remove mushrooms with a slotted spoon and chop any large pieces.
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5
Set mushrooms and broth aside.
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6
Heat oil in the cooker over medium-high heat.
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7
Cook leeks, stirring frequently, until slightly softened, about 3 minutes.
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8
Add 3 cups of tap water, chopped mushrooms, dill, celery, and reserved beans and barley.
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9
Pour mushroom broth into cooker, taking care to leave any residue in the bottom of the bowl.
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10
Lock lid in place.
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11
Over high heat bring to high pressure.
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12
Lower heat to maintain high pressure and cook for 9 minutes.
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13
Quick-release the pressure by placing the cooker under cold running water.
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14
Remove lid, tilting it away from you to allow excess steam to escape.
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15
Add turnips and carrots.
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16
Over high heat, return to high pressure.
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17
Lower heat to maintain high pressure and cook for an additional 5 minutes.
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18
Quick-release the pressure.
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19
Remove lid, tilting it away from you to allow any excess steam to escape.
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20
Stir in salt to taste.
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21
If the vegetables are not quite tender, cover and cook over medium heat until done.
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22
Prepare Horseradish Cream by combining the sour cream and horseradish in a bowl.
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23
Add salt, if needed, and additional horseradish to taste.
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24
Serve soup in large bowls, with a generous tablespoon of Horseradish Cream in the middle.
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25
Pass any remaining Horseradish Cream on the side.