Drying food in the sun/air.
Smoking food in the smoke from a fire.
Salting food (and then perhaps smoking it).
Freeze drying is a healthy method of food preservation because it retains most of the nutrients in the food and does not require the use of preservatives.
You can buy natural food preservatives from Global Natural Food Preservatives Suppliers. You can type in food additives in the internet and it will bring up suppliers of chemical preservatives. Think carefully before adding preservatives to any food.
Preservatives stop food from going of, they preserve its useful life.
additvisand preservatives used food preparation
additvisand preservatives used food preparation
additvisand preservatives used food preparation
additvisand preservatives used food preparation
Preserves food
preservatives-chemicals that slow down the spoilage of food
preservatives
See a list of accepted food preservatives at the link below.
additvisand preservatives used food preparation