Olive oil is a perfect (and extra-flavorful) nondairy alternative to butter for these tuiles, which defy logic by being both gossamer (potato starch gives them a melt-in-your-mouth quality) and sublimely crisp.
Ingredients
1/4 cup sugar
1 large egg white
6 tablespoons potato starch
4 tablespoons unsalted butter, melted, or 1/4 cup olive oil
3/4 teaspoon grated lemon zest
1/4 teaspoon salt
1/4 teaspoon pure almond extract
Equipment: a 17- by 11-inch nonstick bakeware liner such as a Silpat; a small offset spatula
Directions
Preheat oven to 375°F with rack in middle. Line a large baking sheet with liner.
Whisk together sugar and egg white until sugar has dissolved. Whisk in remaining ingredients until smooth.
Spoon 1/2 tablespoon of batter for each cookie, 2 inches apart and in staggered rows, on baking sheet (about 6 cookies), spreading with offset spatula into 4-inch-long cookies (straight or curvy). Bake until pale golden, 7 to 8 minutes. Transfer cookies, while still hot, with a spatula to a rack to cool completely, or curl cookies by draping them over a rolling pin to cool.
Cool sheet and liner before baking more tuiles in same manner.
