Quick answer: Pasta and noodles contain starch, and during cooking and storage their structure absorbs surrounding liquid.
How it works
This is why leftover noodle soup may become thick or nearly dry by the following day. Stirring in more broth can restore a soupy consistency, though noodles may remain soft.
Practical advice
Store noodles and broth separately if texture matters.
Frequently asked question
Does rinsing noodles stop absorption?
Rinsing may remove some surface starch, but cooked noodles can still absorb broth over time.
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