Egg drop soup is a simple and traditional Chinese dish made by adding beaten eggs to boiling chicken broth, creating silky egg ribbons. Its Chinese name, "Dan Hua Tang" (蛋花汤), translates to "egg flower soup," referencing the appearance of the eggs in the liquid. This dish is ubiquitous in Chinese households and often served as a starter in Chinese-American restaurants.

The soup's origins are not precisely documented, but its simplicity suggests ancient roots in Chinese cuisine. Historically, eggs have been a staple in Chinese cooking, and the method of creating an 'egg white' texture by streaming beaten eggs into hot broth likely arose out of culinary practicality and resourcefulness.

Recipes for egg drop soup vary by region. In its most basic form, the soup consists merely of eggs and broth. However, additional ingredients like tofu, tomatoes, corn, and peas are commonly added to enhance flavor and nutritional value. Seasonings such as white pepper, sesame oil, and soy sauce may also be included.

Egg drop soup is noted for its nutritional benefits. High in protein due to the eggs, it can also be rich in vitamins and minerals if vegetables are added. The soup's warm, soothing nature makes it a popular comfort food in many cultures, particularly in cold weather or during illness.

In the United States, egg drop soup became popular with the rise of Chinese-American cuisine in the 20th century. American versions often include cornstarch as a thickening agent, which is less common in traditional Chinese recipes. The dish continues to enjoy popularity worldwide, appreciated for its simplicity, ease of preparation, and comforting qualities.