They are foods that necessarily have to be refrigerated or frozen for proper preservation in good condition, retarding the growth of microorganisms harmful to health, as are the bacteria and fungi. These generally favor the decomposition of perishable foods, which because they are fresh foods have enzymes that help degradation, thus altering their organoleptic characteristics (flavor, aroma, texture and color).
- Perishables such as dairy products (cheese, cream, milk, butter or lard), eggs, meat (fresh or sausage), poultry, fish, shellfish, fruits and vegetables are suitable for the proliferation of bacteria due to the degree of humidity (amount of Water) that they contain.
- Cooked foods and leftovers are also considered perishable.
- Canned, packaged or vacuum packed dairy products, meat, fruits, vegetables, fish or seafood, are perishable once uncovered and have to be refrigerated or frozen at appropriate temperatures, thus prolonging their shelf life.
- Perishable foods should be stored and stored at low temperatures (refrigerated at 4 ° C or less, or frozen at 0 ° C or less).
- When refrigerating perishable foods, they should be used within a suitable period of time, where they retain their organoleptic characteristics (smell, taste, texture and color), aspects that identify the freshness of each product, since they decompose quickly.
- Fruits and Vegetables: For these products it is advisable to buy them maximum every 10-15 days and applying the conservation methods taught on this page. Ideally, every 8 days for freshness.
- Meats: As this product is frozen can be purchased when desired every 8, 15, 30 days or each year, depending on the percentage of fat that contains (lower fat, longer duration) and its freshness at the time of purchase.
- Chicken and poultry in general: This product also freezes and can be purchased every 8, 15, 30 days, or even every 6 months, if it freezes without skin and very fresh.
- Fish and seafood: For these products that can be frozen, you should take into account their freshness at the time of purchase. They can be purchased every 8, 15, 30 days or every 3-4 months.
- Meat products: Pates, sausages, sausages and hams, can be purchased every 15 days, or more if you freeze them fresh.
- Dairy products: Milk, yogurt, kumis, milk drinks and all kinds of fresh cheeses, buy them maximum every 8 days. Butter (cow’s milk) if refrigerated, can be purchased every month or more. Mature cheeses can be purchased every 15-30 days and depending on the kind of cheese (see each kind of cheese).
- Bakery and pastry in general: Bread, cookies, cakes, biscuits, cakes. They must be purchased every 8-10 days maximum.
- Eggs: Buy them every 15-20 days.