GRUYèRE, ANCHOVY, AND OLIVE STRAWS

Steps:

• Preheat oven to 400°F. Line 2 baking sheets with parchment. On a lightly floured surface, roll out dough to a 15-by-18-inch rectangle. Cut in half crosswise. Whisk egg yolk with 1 teaspoon water. Brush one piece of dough with egg wash (reserving remainder).
• Variations:Gruyère: Sprinkle half each of cheese and cayenne over egg-washed dough; season with pepper. Top with second piece of dough and dust off any excess flour; brush with egg wash. Sprinkle with remaining cheese and cayenne; season with salt.Anchovy: Place half of anchovies over egg-washed dough, arranging them vertically along the length in a single layer; season with pepper. Top with second piece of dough and dust off any excess flour; brush with egg wash. Top with remaining anchovies; season with more pepper.Olive: Pulse olives, capers, and thyme in a food processor to form a smooth paste (you should have a scant 1/2 cup). Spread half of tapenade over egg-washed dough. Top with second piece of dough and dust off any excess flour; brush with egg wash. Spread remaining tapenade over dough; season with pepper.
• With a floured rolling pin, roll over dough gently to compress filling slightly and ensure toppings adhere. Cut dough lengthwise into scant 1/2-inch-thick strips. Transfer to prepared sheets, spaced 1/2 inch apart. Refrigerate until firm, 10 to 15 minutes.
• Bake until straws are golden brown and crisp, 16 to 18 minutes. Let cool completely on sheets. Serve in highball glasses or other tall, narrow serving vessels.