This document provides information on preserving foods using salt, including how to make sauces, ketchups, chutneys, and pickles. It discusses the key ingredients and processes for each. Sauces and ketchups require tomato, apple or other pulp at 25% and a total soluble solids content of 25%. Chutneys require 50% pulp. Pickles are preserved using a brine of 8-10% salt solution which inhibits spoilage organisms. All preserved foods require addition of preservatives like sulfur dioxide or benzoic acid. Proper preparation techniques and avoiding over-ripe produce are emphasized to ensure quality.