2 cups flour
1 tsp salt
110 gr or 1 stick butter
1/4 cup milk
1 egg yolk*
1 tsp lemon juice
In a cup, put the milk, egg yolk and 1 tsp lemon juice. Stir them.
Put the flour and salt in food processor. Add cut-up butter, then start processor. It will look like little balls. Add liquids and process until smooth. If too wet, add flour, 1 Tbsp at a time.
Divide into 2 pieces. Roll thin between two sheets of waxed paper. (The pie plate does not need greasing.) Use immediately or store in freezer.
* If you use the whole egg, you will need to add more flour.