delecious cookies

This makes delicious shortbread cookies. Pure butter. yum. I got these from the NYT magazine a few years ago, so I've had to translate into normal ingredients from their bizarre foodieisms ("high-fat plugrà butter to butter, or virgin fine ground sea salt from Jupiter's moon europa to salt...)
sablés
2 sticks butter
1/2 cup sugar
1/4 cup conf sugar
1/2 tsp (sea) salt
2 egg yolks at room temp
2 cups flour
(optional decoration: 1 egg yolk, crystal sugar)
cream butter, sugar, salt, beat in egg yolks until blended. Add flour with minimum of mixing. dump dough on surface, gather into two balls. Shape into smooth logs 9 in long, wrap in plastic wrap and chill for at least two hours.
preheat to 350, brush egg yolk and sprinkle with sugar. slice into 1/3 inch cookies. bake for 17-20 min. (you can add lemon zest to the dough with the sugar, if you want)
the GOOD ones - chocolate sablés
1 1/4 cups flour
1/3 cup dutch cocoa powder
1/2 tsp b soda
1 stick + 3 thbs butter, room temp
2/3 cup packed brn sug
1/4 cup sugar
1/2 tsp salt
1 tsp vanila
5 ounces chopped chocolate or chips
sift flour, b soda, cocoa, together. cream butter, add sugar salt vanilla, beat. mix in dry ingrds as liitle as poss, toss in choc, mix. make two logs 1 1/2 in diam. wrap and fridge for at least 1 hour. heat ovn 350 - slice 1/2 in rounds ( I rolled the logs in sugar - can't have too much!) bake 1 sheet at a time for 12 minutes on center rack.

HIDE THE COOKIES