Spyke

One of their first rockets was a slightly modified copy of the German v-2 rocket, which was fuelled by alcohol. Unsure what the soviets made their alcohol fuel out of, but it would at least have been possible to make that with potatoes...

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The best part is after re-entry, the cosmonauts had baked potatoes for rations.

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Did you know that the soviets used to have a potato powered rocket? | Spyke