Which of the following is NOT a type of cold preservation?

Heating is not a type of cold preservation because it involves raising the temperature of food to eliminate bacteria and extend shelf life. Cold preservation methods aim to slow down the activity of bacteria, yeast, and molds by keeping food at lower temperatures. Refrigeration, freezing, and chilling all fall under cold preservation techniques. Refrigeration keeps food at temperatures just above freezing to slow the growth of microorganisms, while freezing halts microbial activity altogether by turning moisture into ice. Chilling, often used for short-term storage, lowers the temperature of food to a level that preserves its freshness. Hence, heating is entirely opposite in purpose to these methods of preserving food through cold temperatures.