Heather graciously said I could share the recipe with you! I hope you will try this cake, see how fabulous her recipes are, and run out and buy her book! Everything in it is just as fabulous.
In bowl of stand mixer fitted with whisk attachment, place the butter, sugar and lemon zest. Beat until light and fluffy.
With the mixer on low speed, add the eggs, one at a time, combining thoroughly in between. With the mixer still running, add the lemon juice. (batter will look curdled, but its not)
Add one third of the dry ingredients and 1/2 cup of the buttermilk. Mix, then stop and scrape the sides of the bowl. Repeat, adding another third of the dry ingredients and the remaining 1/2 cup buttermilk. Mix, then stop and scrape. Add the remaining third of the dry ingredients and mix until completely combined and the batter is light and fluffy.
Bake for 25-30 minutes, or until an inserted toothpick comes out clean. Let the cakes cool before removing from the pans.
Combine butter and powder sugar in a large bowl or standing mixer. Mix together on medium speed until pale and fluffy, about 3 minutes. Add in the milk and strawberries and mix on high speed until the frosting is very fluffy and pale pink in color, with flecks of strawberry.