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1
In a bowl, mix together the egg yolk and granulated sugar.
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2
Melt butter in milk and add to the bowl with the vanilla oil.
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3
Mix.
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4
In a separate bowl, whip the egg white until it becomes like a stiff paste and forms a meringue.
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5
Mix in the flour and baking powder.
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6
Gently add in the mixture from Step 1 and cook in a waffle maker.
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7
Make the custard.
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8
In a bowl, mix together the egg yolk and granulated sugar until it becomes white.
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9
Sift in the flour and mix well.
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10
Heat milk and vanilla beans in a pot.
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11
Before it comes to a boil, turn off the heat and add the mixture from Step 3 in several batches.
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12
Mix well.
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13
Heat Step 4 on medium heat, stirring constantly.
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14
When the edge of the mixture begins to bubble, use a whisk to smooth it out and remove from heat.
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15
Pour Step 4 into a shallow container greased with butter and add butter on top as well.
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16
Tightly wrap with plastic wrap and cool.
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17
Put the custard into the waffle, cut into 2 or 3 parts and it's ready.
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18
You can also wrap it decoratively to give as a gift.
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19
If you want a chocolate waffle, in Step 2 add 1 tablespoon of cocoa powder to the batter and mix in.
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20
Another version can be found here.