Pickling salt has applications other than pickling. Pickling can be broadly classified into two categories&colon; chemical pickling and fermentation pickling. Sichuan cuisine often contains food preserved through pickling, salting and drying. Ancient methods of preserving fish included drying, salting, pickling and smoking. This mainly involved salting, curing, curdling, drying, pickling, fermenting, and smoking. Food preparation techniques such as pickling and salting do not exterminate the causative agent. Brining can be applied to vegetables, cheeses and fruit in a process known as pickling. Sweet gherkins, which contain sugar in the pickling brine, are also a popular variety. Dill is also used for pickling and in salads. Common uses for glass bottles include food condiments, soda, liquor, cosmetics, pickling and preservatives. Ham and bacon are made from fresh pork by curing with salt (pickling) or smoking. Microorganisms are used in brewing, wine making, baking, pickling and other food-making processes. In general cultivation, cucumbers are classified into three main cultivar groups&colon; "slicing", "pickling", and "burpless". Sugaring is a food preservation method similar to pickling.