Sesame seeds, lemon, and thyme flavor these crackers.
Preheat oven to 350 degrees. In the bowl of a food processor, pulse flour, salt, black pepper, lemon zest, cayenne, thyme, and 2 tablespoons sesame seeds. Add butter; pulse until mixture resembles coarse meal. With machine running, add 1/4 cup cold water; process until dough comes together.
Transfer the dough to lightly floured surface, and divide it into 2 equal parts. Roll out to 1/8-inch thickness. Cut into 2 1/2-inch circles, and transfer to an ungreased baking sheet.
Brush egg white over rounds; sprinkle with remaining tablespoon sesame seeds and coarse salt. Bake 20 to 25 minutes, until firm to the touch. Let cool on wire rack. Store in an airtight plastic container, at room temperature, up to 1 week.
These can be baked with a hole and strung for gift giving.