You can distinguish between lye and starch based on their flavor, feel, and dissolution with water.
One, the taste
1, the taste of lye noodles slightly bitter slightly salty.
2, starch has no flavor.
Second, feel
1, the feel of lye noodles: twisted by hand, rough.
2, starch feel: with a hand twist, delicate.
Three, add water to dissolve
1, lye noodles dissolve quickly in water, the water is clear and not turbid.
2, starch is not easy to dissolve in water, the water is cloudy.