Smoking is a process of preserving food by exposing it to smoke from burning wood, which provides a smoky flavor and acts as a preservative. There are three types of smoking: cold smoking below 35°C, warm smoking from 60-80°C, and hot smoking above 80°C. Sugar canning uses 80-120% sugar solution to the raw material being preserved, which extracts moisture during boiling and leaves enough sugar to prevent spoilage. Canned goods should be stored in a dry, cool place to maintain the high sugar concentration that inhibits microbial growth and preserves the contents.