Directions

• Using a five-hole zester, remove the zest from 1 of the lemons in long strands. Halve and squeeze enough lemons to yield 1/3 cup (75 milliliters) juice.
• In a small pot, stir together the lemon juice and zest, water, and sugar over medium heat. Bring to a boil and cook, stirring frequently, until the sugar is completely dissolved and clear, about 1 minute. Pour into a pie pan and let cool.
• The syrup can be made 1 day ahead, covered, and refrigerated.
• For the dough and for frying:
• In a small bowl, stir together the yeast and 1/4 cup (60 milliliters) of the warm water and let stand in a warm place until the mixture bubbles, about 10 minutes.
• In a medium bowl, using a fork, stir together the flour, cornstarch, and salt. Stir in 1/2 cup (120 milliliters) of the warm water and the yeast mixture. Then slowly stir in enough of the remaining 1/2 cup (120 milliliters) warm water until the dough is lump-free and the consistency of thick pancake batter. You should have 1 1/2 to 2 cups (360 to 480 milliliters) batter.
• Cover the bowl with plastic wrap and refrigerate until doubled in bulk, at least 6 hours and up to 24 hours. The dough will be loose and spongy and have a yeasty aroma.
• To make the fritters: Scrape the dough into a 1-gallon (4-liter) resealable plastic bag or large pastry bag fitted with a 1/4-inch (6-millimeter) plain pastry tip and set the bag in a bowl for support. Let the dough stand for about 30 minutes before frying. Line a large plate with paper towels. Place the prepared plate, tongs, a small spider or slotted spoon, the syrup, and a tray to hold the finished fitters near the stove.
• Pour the oil to a depth of 3 1/2 inches (8 1/2 centimeters) into a 4- or 5-quart (4- or 5-liter) pot, wok, or electric fryer and heat to 375° F. If using a plastic bag for the dough, snip 1/4 inch (6 millimeters) off one of the bottom corners, cutting on the diagonal, to create a piping tip. Roll the top of the pastry bag closed to move the batter toward the opening. Don't worry about air pockets.
• Pipe a bit of the batter into the hot oil. The oil should bubble around the batter immediately. If it does not, continue heating the oil and try again.
• Pipe the dough into the hot oil, creating 3- to 4-inch (7 1/2- to 10-centimeter) coils or squiggles, letting gravity help push the batter out. Be careful not to crowd the pan. Fry the dough, turning over at the halfway point, until bubbled, golden, and crisp, 4 to 5 minutes total.
• Use a spider or slotted spoon to fish the fritters out of the oil, drain them briefly on the towel-lined plate, and then drop them into the syrup for a moment or two, turning them to coat evenly. Lift them out of the syrup and transfer them to the tray in a single layer to cool.
• Repeat with the remaining batter, skimming any loose bits of dough from the hot oil between batches to prevent burning. Scrape any batter that escaped into the bowl back into the pastry bag to make more pastries.
• The cooled pastries can be piled on a platter. Pour any remaining syrup over the top.
• The fritters taste best served the same day they are made, although they will hold their crispness overnight. Store loosley covered at room temperature.