White Noodle

"White noodle" is a bit of a broad term, as there are many types of white noodles used in various cuisines. However, based on your mention of USA restaurants, I'm assuming you might be referring to a common type of noodle used in American or European cuisine.

One possible candidate is the ubiquitous "egg noodle." Egg noodles are a type of pasta made from wheat flour, water, and eggs. They are commonly used in soups, stews, and casseroles, and are a popular choice for dishes like chicken noodle soup, beef stroganoff, and lasagna. They have a slightly chewy texture and a mild, slightly sweet flavor.

Another possibility is the "rice noodle," which is made from rice flour and water. Rice noodles are often used in Asian-inspired dishes, such as stir-fries and soups. They have a soft, slightly gelatinous texture and a neutral flavor.

There are many other types of white noodles, such as mung bean noodles, cellophane noodles, and rice stick noodles, to name a few. However, egg noodles and rice noodles are two of the most commonly used varieties in American and European cuisine.

I hope that helps!