still thinking about the borrowers other london au. i do have a plot idea but i dont want to spoil it in case i end up writing the fic so for now you just get worldbuilding
mostly I've been thinking about how they get food. unfortunately theyre not going to be eating eels, given their size and location, but i think snails would be a good equivalent! i feel like people would keep snails like cattle, and use the empty shells as storage. they might also raise and eat insects, and occasionally hunt a rat/other rodents. that would be pretty dangerous though, so I imagine it's a pretty rare occurence and mainly happens when one tries to encroach on the city.
in terms of plants, I think mostly they eat mushrooms (not technically a plant but yk) and weeds like dandelions and bittercress, but it'd be difficult bc I don't think any other londoner wants to go actually outside bc there are Predators out there, so I think mostly they rely on borrowing to get nonmeats, including fruits/vegetables/salt/bread.
Most of their meals are in the form of soup, but i do think they would make things like jerky esp if they bring down a whole rat