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1
Preheat oven to 375F.
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2
Bake potatoes until tester can pierce center but potatoes are not yet tender, about 30 minutes.
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3
Cool.
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4
Peel and coarsely grate potatoes.
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5
Transfer grated potatoes to bowl.
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6
Add chives.
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7
Season to taste with salt and pepper.
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8
Mix in egg white.
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9
Oil baking sheet.
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10
Press 1 heaping tablespoon potato mixture onto sheet, forming 2-inch round.
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11
Repeat with remaining mixture, forming 8 cakes total.
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12
Add enough oil to heavy large skillet to reach depth of 1 inch.
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13
Heat oil to 350F.
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14
Add potato cakes to skillet and fry until golden, about 2 minutes.
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15
Drain on paper towels.
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16
(Can be made 1 day ahead.
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17
Cool; cover and chill.
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18
Rewarm in 350F oven about 10 minutes before serving.)
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19
Gently mix all ingredients in small bowl.
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20
Combine first 4 ingredients in medium bowl.
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21
Using electric mixer, beat until peaks form.
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22
Season with salt and pepper.
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23
Place 1 warm potato cake in center of plate.
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24
Place 2-inch-diameter cookie cutter or biscuit cutter with 1-inch-high sides around potato cake.
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25
Top cake with 2 tablespoons egg mixture; press to adhere.
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26
Press 2 tablespoons salmon atop.
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27
Dollop with 2 tablespoons horseradish creme fraiche.
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28
Gently remove cookie cutter.
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29
Smooth top.
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30
Top with small spoonful caviar.
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31
Repeat with remaining cakes.
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32
Drizzle basil oil around if using.