A website that could be helpful to you is Homesteading Today.
https://www.homesteadingtoday.com/
To get answers for your cooking questions for might try the first forum listed, Homesteading Questions, or a little further down, the Cooking forum. But you would probably have the most luck down in the Specialty Forums, Survival and Emergency Preparedness. This website is not for the faint of heart!
Also, check your library for the magazine "Countryside". It used to be called "Countryside and Small Stock Journal", don't remember when the name changed. It has been published since 1917 and generally has more accurate, practical, and helpful advice than the Mother Earth News. The Mother Earth News is geared more for the wannabes; Countryside is geared for the folks actually doing it.
https://countrysidenetwork.com/magazines/