
As part of the Mayor’s London Scientist programme – CREST Award, a group of Year 10 students have been looking at effective ways of preserving food to keep them fresher for longer in rural areas of hot countries where there is no electricity available.
Based on research the students decided the most effective method is the use of zeer pots. The zeer pot is a simple non-electrical fridge made of local materials. It consists of one earthenware pot set inside another, with a layer of wet sand in between. As the moisture evaporates it cools the inner pot, and can keep up to 12kg of fruit and vegetables fresh for as long as 20 days. The zeer pot is simple to make, cheap and sustainable.
For their STEM project the students are investigating the effectiveness of zeer pots at preserving food. In the pictures students are making their own zeer pots to compare how well it can preserve food to not using a zeer pot/simply storing food in a plastic container.
Mr Bammeke










