Hello BFCP,
a few months ago I thought of going to Lisbon for a while but wasn't sure how to manage my diet there. For example I need a source for raw milk (it kind of saved my life healthwise, but yes I know not everyone is doing good on raw milk) and for grass-fed animal organs, fat and so on. Doing research on such food sources without being able to speak portuguese was pretty hard so I gave up on that plan. So if you don't mind it would be awesome if you could make a list of the food sources you found / you use in and directly around Lisbon. Thank you.
Enjoy the new diet!
Sorry for just answering you now. Unfortunately there's only one place which is this one:
https://www.herdadedofreixodomeio.pt/. They have a store at the Mercado da Ribeira. For meat and etc there's more places like organic supermarkets in S. Sebastião, Saldanha and so on. Mind you that that store has very little of raw milk for sale, they receive very little and it sells extremely quick, I went there like 3 or 4 times, they never had it, because it was already sold out or it didn't even came. So you have to order online from their site (min 20€ checkout).