the.com/thickener

The reason soup feels like a hug instead of a beverage.

means A substance added to a liquid to make it denser and more viscous, like flour, cornstarch, or gelatin.

from Straightforward carpentry of English: the adjective 'thick' (from Old English 'þicce,' meaning dense or solid) plus the verb-making suffix '-en' (seen in 'soften,' 'harden,' 'sharpen') plus the agent suffix '-er' for the thing that does the job. No hidden backstory here — it's a word built exactly the way it sounds, by people who needed a plain label for the stuff that turns broth into gravy.

origin
often cornstarch, flour, or ground seaweed extract
science
swells starch granules to trap water molecules
industry secret
xanthan gum comes from fermented bacteria slime
fun fact
too much turns gravy into wallpaper paste
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