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1
Prepare a Jelly Roll pan by lining it (17x11-inch) with parchment or waxed paper, lightly greased& floured, set aside.
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2
Combine nuts, flour & lemon rind.
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3
In a large bowl beat egg yolks with 1/2 cup sugar for about 3 minutes or until thickened and pale yellow, gently fold in the nut mixture.
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4
With clean beaters beat the egg whites, when foamy add cream of tartar, continue beating until soft peaks form, beat in the remaining sugar until whites are stiff.
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5
Stir 1/4 of the egg whites into the yolk mixture.
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6
Lightly fold in the rest of the whites.
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7
Spread mixture evenly over the prepared pan.
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8
Bake in 400u00b0F oven for 10-12 minutes or until the cake springs bake when lightly touched in the middle.
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9
Let cool on the pan.
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10
Lemon Syrup: Meanwhile bring lemon juice & sugar to a boil until the sugar dissolves, stir in the run, remove from heat & cool.
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11
Filling: In a small saucepan simmer lemon rind, juice sugar& butter over medium heat, stirring until the butter melts& sugar has melted.
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12
Whisk together the eggs, gradually beat in the hot mixture.
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13
Return to saucepan, cook over medium heat, stirring constantly for about 1 minute or until thickened.
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14
Strain into a small bowl & immediately place plastic wrap over the bowl& refrigerate for 30 minutes (must be cold).
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15
Whip cream& fold into the lemon filling.
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16
To assemble: Sprinkle icing sugar over the cake.
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17
Loosen edges and invert the cake onto a fresh tea towel, peel off the paper, trim crispy edges (if any).
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18
Sprinkle cake with the syrup.
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19
Spread the filling over the cake.
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20
Starting at the short end roll up the cake.
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21
Place cake on a serving platter, dust lightly with sugar (optional) & serve.