I don't like how coercive they are in enforcing most of their policies, but I've read some good things about the food system of Cuba. US sanctions and the collapse of the Soviet system forced them to take great strides toward sustainability, and
local food security also seems to be a high priority. They even compromised on collectivism, because independently-operated market gardens turned out to be more productive (within constraints typical of Cuban conditions) than large operations.
Interestingly, there are
enough fresh vegetables, shortages of meat and of sugar, and a tremendous surplus of physicians. So a typical surgeon can make more money moonlighting as a black-market
chicken butcher, than the hospital pays for the day job. Not exactly a utopia, but it certainly doesn't have the same flaws as the US food system, and might be healthier overall.
"the qualities of these bacteria, like the heat of the sun, electricity, or the qualities of metals, are part of the storehouse of knowledge of all men. They are manifestations of the laws of nature, free to all men and reserved exclusively to none." SCOTUS, Funk Bros. Seed Co. v. Kale Inoculant Co.