Spoilage has nothing to do with what's "left to spoil." Cooked ramen noodles will spoil just as readily as udon. Bacteria need moisture to grow. Udon is some

Spoilage has nothing to do with what's "left to spoil." Cooked ramen noodles will spoil just as readily as udon. Bacteria need moisture to grow. Udon is sometimes sold fresh (wet), and that will spoil. Dry udon does not spoil. As for palm oil... udon is also made with it.