The food items that get spoilt easily are known as ‘Perishable Food Items’.
The food items that do not get spoilt easily and can be stored for a long time are known as ‘Non-Perishable Food Items’.
Some of the perishable food items are milk, fruits, vegetables, bread, etc.
Some of the non-perishable food items are biscuits, wafers, pickles, jams, etc.
There are certain methods to preserve food items, like adding salt or sugar, adding oil, drying, canning, freezing, etc. These methods are known as ‘Preservation Methods’.
Milk can be preserved by boiling and then keeping in fridge.
Pulses and cereals have to be kept in dry containers to preserve them for a long time.
Vegetables have to be kept in fridge.
Some vegetables like onion and potato can be kept in dry open place for preservation.
Mamidi tandra is made from ripe mangoes.
The pulp of mangoes is collected in a large pot.
Then it is strained through a muslin cloth in order to remove fibres.
Jaggery and sugar is added in the pulp in equal amounts.
The pulp is spread in thin layer to dry in sun.
The pulp layer is covered with some clothes in order to protect it from dust.
Each day a new layer is added on the top of the old layer.
This continues for 4 weeks.
At the end of 4 weeks, it looks like a golden cake and is cut into small pieces to serve.
