A solar dryer is a device that uses the Sun’s energy to dry food. It works by capturing sunlight and using it to heat up air, which then flows through the dryer and removes moisture from the items inside. Solar dryers are enclosed, which helps protect the items from dust, insects, and rain while speeding up the drying process compared to drying in open air. They are a simple, eco-friendly, and cost-effective way to preserve food like fruits, vegetables, and herbs.