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1
Put the meat in a mixing bowl.
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2
Heat 2 teaspoons of the oil in a small saucepan or skillet and add half the onions.
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3
Cook, stirring, until wilted.
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4
Cool briefly.
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5
Add the cooked onions to the meat.
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6
Add the bread crumbs, pickles, garlic, salt and pepper and blend thoroughly with the hands.
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7
Divide the mixture into four equal portions and shape each into a patty about 1 inch thick.
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8
Heat the remaining 1 tablespoon oil in a skillet and when it is very hot add the patties.
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9
Cook over moderate heat about 5 minutes or until nicely browned on one side.
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10
Turn the patties and cook 2 minutes or to the desired degree of doneness on the other side.
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11
Transfer the patties to a warm platter.
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12
Pour off the fat from the skillet and add the butter.
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13
When it is hot and melted add the remaining onions.
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14
Cook, stirring, until wilted and add the vinegar, stirring.
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15
Cook about 45 seconds and stir in the sour cream.
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16
Stir and heat without bringing to the boil.
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17
Pour the sauce over the patties.
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18
Sprinkle with parsley and serve.