this post was submitted on 11 Mar 2025
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Vintage and Retro Ads, Promos, Fliers, Etc.

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[–] d00ery@lemmy.world 4 points 8 months ago* (last edited 8 months ago)

Yes, it must be something like that. Similar to ersatz coffee where I believe the Nazis resorted to using acorns instead of coffee beans. https://en.m.wikipedia.org/wiki/Coffee_substitute

This article talks about the problems of sourcing rubber as a raw material and the solutions - https://historycrumbs.com/retreading-tires-the-armys-ingenious-solution-to-rubber-shortages/