"In my mind edible substances that last a long time are free of nutrients and high in calories" Salted cod, cured meats, pickels, dried beans, dried oats, past

"In my mind edible substances that last a long time are free of nutrients and high in calories" Salted cod, cured meats, pickels, dried beans, dried oats, pasta, rice, beef jerky, cheese... We have been using preservation methods since ancient times, which do not have any adverse effect in terms of nutrition. In terms of taste, in many a case, the method used to preserve can enhance the taste and create a different (but not inferior) kind of food than the original. I don't see why modern methods should have an adverse effect, when done right.