So while searching for a taxonomy of cake, I found an amazing blog. It blew my mind.
A Sketch Towards a Taxonomy of Meta-Desserts has given me a whole new way of describing desserts:
lemon meringue pie = heat(egg white(heat(pastry(custard(fruit))))) where custard refers to the egg yolk mixture and fruit to the lemon. This is a two-function dessert involving four dessertoms.
Anyway, here's the recipe I actually followed. I got an awesome pastry tip from Henry - use a ratio of 3:2:1:1 for flour, butter, icing sugar and egg respectively. However, since I only had 100g butter, I decided the whole egg made the pastry too liquid so I had to add extra flour and sugar...and then I baked it blind and only had teaspoons to weigh it down, so the whole base puffed up :-(
heat(egg white(heat(pastry(custard(fruit)))))
Pastry:
100g butter (easier if it's room temp, or chilled and then grated)
150g flour (1 cup, although I added more later)
50g icing sugar (just under 1/2 cup)
1 egg
Cut the butter into the sifted flour and icing sugar until it resembles breadcrumbs, then add the beaten egg (I added a whole lot more flour and sugar, but then wondered if I got the ratio thing wrong? Maybe my egg was just a big 'un). Mix until you have a soft doughy mess. It should be all over your hands by now. Roll into a ball, wrap in gladwrap and chill for about 20mins or so. Grease a pie tin/cake tin and dust with flour. Remove the pastry from the freezer, flour a sheet of baking paper, and roll the pastry out until it's the right size for your pie tin. Roll the pastry around the rolling pin, almost like rolling sushi (use the baking paper like a sushi mat), and then un-roll the pastry over the tin. Trim the edges, and leave to chill in the fridge. Or you could just ignore the recipe and bake the pastry (with baking paper and spoons to weigh it down) like I did. I guess it does stop the pastry from becoming soggy when you add the filling. Anyway, while you bake the case (for 15 mins at 180 or something) or chill it, make the filling.
Filling:
Combine the following and mix lightly:
3 large egg yolks
2 Tb caster sugar
grated rind and juice of 1 lemon
1/2 cup fresh white breadcrumbs
1 cup milk
Leave to soak for 1 hour.
Preheat oven to 200 C. Beat filling until smooth and pour into the chilled (or woefully cooked) pastry case. Bake for 20 mins or until the filling has just set and the pastry is golden. Remove from oven and cool on a rack for 30 mins. Lower oven temp to 180 C, and make the topping.
Topping:
Whisk 3 large egg whites until they form stiff peaks, and then gradually whisk in 1/2 cup caster sugar until glossy. Spoon on top of the filling. You could make it all swirly if you like. Try to make sure the meringue is spread right to the rim of the pastry case. Bake for 20-25 mins or until crisp. Cool for 10 mins before serving.
Mmmmm despite my worries about the pastry, this turned out a treat. It leaked a whole lot of liquid, though, which I suspect was the lemon juice sneaking it's way out. I would like to make it more lemony, but I'm not sure how to do that without compromising the consistency...