I've read, once, that while the English navy was fighting scurvy with citrus, the Germans fought it with fermented cabbage. Hence: "limeys" and "krauts"!
I've found that my home-made sauerkraut keeps for months on a cool, dark shelf in the basement, and I expect that cabbage will be more widely available than citrus in the distant future.
According to academic research, though, the vitamin-C content of sauerkraut can vary widely: 5.8 - 52 mg/100g. https://pubmed.ncbi.nlm.nih.gov/6625831/
Re: When life gives you lemons...
I've found that my home-made sauerkraut keeps for months on a cool, dark shelf in the basement, and I expect that cabbage will be more widely available than citrus in the distant future.
According to academic research, though, the vitamin-C content of sauerkraut can vary widely: 5.8 - 52 mg/100g.
https://pubmed.ncbi.nlm.nih.gov/6625831/
Lathechuck