I don't know how much of it was limited resources vs. punitive, but even the US and UK (who were the best of the victors) allowed hundreds of thousands (potentially millions) to die of starvation and disease. But life for UK civilians in the immediate post-war period was also not very good.
The US is the country which probably retained the most industrial/agricultural capacity and could have done more.
Yeah from my understanding everyone was on rations in Europe and the civillians got the short end as far as quantity and quality goes. That is a good point though, I wonder if the lack of food was due to long supplie lines and a decrease in production in the US or if it just wasn't prioritized high enough.
The US is the country which probably retained the most industrial/agricultural capacity and could have done more.