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1
Preheat oven to 350u00b0; grease and lightly flour a 12-cup Bundt pan.
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2
Measure the flour, baking powder, salt, and nutmeg into a bowl; sift or whisk to combine.
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3
Using a stand mixer with the paddle attachment, beat the butter and sugar on med-high speed until the mixture is very light in color--almost white--and the texture is fluffy, about 7 minutes; scrape down the sides of the bowl a few times during the process.
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4
Combine the egg whites and vanilla in a liquid measuring cup; with the mixer on medium speed, add the egg whites slowly (about 1/4 cup at a time), completely incorporating each before adding the next; scrape bowl as needed.
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5
Note--to me, the author makes the next steps more complicated in her description; here is what I do when adding the dry and wet ingredients-- add flour mixture alternately with milk, beginning and ending with flour mixture (flour, milk, flour, milk, flour).
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6
Author's instructions--Decrease mixer speed to low; add 1/3 of the dry ingredients to the mixer and incorporate on low speed, then increase to medium speed.
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7
Add 1 cup of the milk and mix briefly to incorporate; reduce speed to low again, add half the remaining dry ingredients, and mix to incorporate, then increase the speed to medium and beat for 1 minute.
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8
Repeat with the remaining 1 cup milk and the remaining dry ingredients, but stop mixing just before the flour is fully incorporated.
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9
Finish the mixing by hand, using a sturdy spatula and being sure to scrape up from the bottom of the bowl.
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10
Pour the batter into the prepared pan; bake for 45 minutes, then rotate the pan, lower oven temperature to 325u00b0, and bake for 30 minutes more.
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11
It's ready when the sides pull away from the pan slightly and it springs back when pressed lightly in the center; the top will probably split; use a cake tester to check for doneness.
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12
Make the glaze while the cake is in the oven--measure the powdered sugar, cream, and vanilla into a small bowl and whisk until smooth.
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13
Let the cake cool for 15 minutes before turning it out.
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14
Whisk the glaze again until completely smooth, then use it immediately.
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15
Saturate the cake completely, using a pastry brush to coat the entire surface.
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16
Apply the entire amount of glaze; it will be enough for several coats.