Scallion Pancakes with Black Vinegar Dipping Sauce

Whisk vinegar, oyster sauce, soy sauce, chili oil, and sesame seeds in a small bowl to combine; set sauce aside.

Place 2 cups flour in a large bowl; add ¾ cup warm water (105°–110°) and stir until a very shaggy dough forms. If dough looks dry, add more water a tablespoonful at a time and mix until dough comes together.

Turn out dough onto a lightly floured surface and knead until smooth. (It will tend to stick to your hands and the work surface at points along the way, but don’t freak out, just re-flour your hands and rub them together to get the dough off, and use a bench scraper to get the dough off the surface). Cover dough with a damp kitchen towel and let rest at room temperature 30 minutes.

Flour your hands and divide dough into 4 pieces. Working with 1 piece at a time and keeping remaining pieces covered with damp kitchen towel, gently flatten or roll out dough on a lightly floured surface to a 9" round. No need for brute force here…be light! Brush dough lightly with oil and sprinkle with ½ tsp. salt. Sprinkle one-quarter of scallions (about ¼ cup) evenly over round and roll up, starting at the edge closest to you, to make a spiraled rope. Wind rope around itself to make a coil (think cinnamon bun) and press the outside end under to seal. Using the palm of your hand, push down lightly on coil to flatten. Roll coil out gently into a 7" round and cover with another damp kitchen towel. (Be careful not to roll out pancakes too thin, as the scallions will break through the dough.) Repeat process with remaining pieces of dough, scallions, salt, and more oil to make 3 more pancakes.

Heat ½ cup oil in a medium nonstick skillet over medium-high. Slip a pancake into oil and cook, shaking pan gently and pressing down on pancake to flatten more in the beginning, until golden brown, about 2 minutes. Turn; cook until second side is golden brown, about 2 minutes. Transfer to paper towels to drain. Cut into 6 wedges. Repeat with remaining pancakes, adding more oil to skillet if needed. Serve with reserved sauce.