"Beef wellington bites are a wonderful festive appetizer. Beef pieces wrapped in puff pastry together with a flavorful filling and baked until golden brown...."
INGREDIENTS
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1 pound beef tenderloin (450 grams), see note 1
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½ teaspoon salt, see note 2
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¼ teaspoon black pepper (or to taste)
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1 tablespoon olive oil
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1 tablespoon olive oil
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½ onion, minced
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2 cups finely chopped button mushrooms (about 7 ounces/200 grams), see note 3
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1 tablespoon regular soy sauce
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black pepper, a generous pinch
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1 teaspoon dried oregano
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½ cup pitted black olives (60 grams)
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1 pound puff pastry (450 grams), see note 4
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mustard, to taste, see note 5
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1 small egg, beaten