Longkou vermicelli noodles are a type of glass noodle made primarily from mung bean starch, and sometimes pea starch, originating from Longkou City in Shandong Province, China. These translucent noodles are known for their thin, tender, and silky texture when cooked and are versatile for various Asian dishes such as stir-fries, soups, salads, and spring rolls, as they readily absorb flavors.