World peace cookies (chocolate sablé slice-and-bake cookies)

Sift the flour, cocoa and baking soda, then give them a last whisk to blend.

Mix the unsalted butter with the fine sea salt, granulated sugar, brown sugar and a little vanilla to a smooth but not fluffy mix.

Add the flour all at once, covering the bowl, and mix until the dough holds together.

Add the chopped bar chocolate and pulse briefly to work it in; pull the dough together by hand.

Divide in half and roll each half into a log about 8 to 9 inches long.

Tighten each log in parchment by pulling the under-paper while pushing a straight edge against the log.

Chill in the refrigerator, wrapped in the parchment, until firm.

Slice into half-inch thick rounds; press any cracked pieces back together.

Bake at 325 for 12 minutes; they will not feel done and set on the cooling rack.