The phrase denotes a specific set of instructions for preserving a citrus fruit spread, typically bitter oranges, through a method that ensures long-term storage and safety. It encompasses ingredients, precise measurements, preparation techniques, and processing methods necessary to create a shelf-stable product. For example, a detailed document outlining the quantity of oranges, sugar, pectin, and acid required, alongside the steps of slicing, cooking, and sealing the mixture in sterilized jars, constitutes such a procedure.
The significance of a reliable procedure lies in its ability to extend the availability of seasonal produce and minimize food waste. Furthermore, adhering to established guidelines is crucial for safety, preventing spoilage and the risk of botulism. Historically, preservation methods like this have been vital for sustenance during times of scarcity and for trade, enabling the transport and consumption of fruit products over long distances.