Glass noodles are mainly made of starch, that is correct. Generally, Asian glass noodles, as in the case of Sai Fun's vermicelli glass noodles, use a mixture of corn starch, pea starch, and mung bean starch, which differentiates them from the pasta types common in Europe. There are several advantages that Asian glass noodles offer compared to European pasta.
Throughout Asia, glass noodles are widely used and popular due to their characteristic texture and versatile uses. Glass noodles score points even in preparation, as they are usually cooked in a very short time, often just one minute is enough.
Glass noodles can integrate excellently into the taste of their accompanying ingredients, but are also suitable for soups or as a filling for spring rolls. In addition, glass noodles are free of fat, salt, or protein, which makes them a particularly healthy option.