I feel like Dr. Stone should shine a bigger spot light on Salt production.
in medieval and tudor times this would certainly be true, but by the victorian period the spice world had drastically changed!
depending on where you lived in the world there may be wild herbs available to forage. mint, fennel, dill probably, garlic for sure all grow wild in the UK, or could be cultivated in gardens. in more arid places like the middle east/northern africa/the mediterranean things like rosemary, oregano, bay would be available.
and during victorian times spices would have been more available to people in the UK and elsewhere in europe because of colonization of india (which started in the 1600s ish, and would have been well established 200 years ago in the early victorian period.).
in medieval and tudor times spices would have been very expensive for sure, but once the east india company and the spice trade really gets rolling they become much more available. a lot of victorian cookbooks mention spices quite frequently, so one can assume they were being used regularly!
and if you're interested in salt, which victorians would have certainly eaten a lot of and been buying quite regularly, mark kurlansky's book "salt" (it's just called salt) is a truly fascinating look at the micro-history of salt!!