Crumb the flour and butter together with your fingers.
Add the salt and sufficient ice water to make a very stiff dough.
Chill for a half hour.
Grease an 8 inch pan.
Roll out the pastry and line the pan with this.
Pour the egg mixture into this and bake as above.
For a pleasant alternative add 2 tablespoons of grated cheese to the egg mixture.
Then you can omit the fried bacon.
Eat the tart hot or cold.