What are "scallion pancakes," and how are they typically served?

Scallion pancakes, or “cong you bing,” are a type of Chinese flatbread made with dough layered with chopped scallions and a bit of salt. The dough is rolled out, folded, and then pan-fried until crispy and golden brown. The pancakes are known for their flaky, layered texture and savory flavor. They are often served as a side dish or appetizer and can be enjoyed with a dipping sauce made from soy sauce, vinegar, and sometimes a touch of sesame oil.