At Frog Song we grow a spring onion crop of Yellow Granex variety, which is the same used for Vidalia onions. We sell our fresh onions during March and April but once the tops “drop” in May we harvest our remaining crop to cure for sale during the summer. This involves placing all onions in flat racks that we stack in our curing room, which is a modified shipping container with many fans (including a large exhaust fan). The warmth from the container walls and constant air circulation helps dry the onion skins down while the flesh converts chlorophyll to stored sugars. We rotate the racks to try and keep everything drying evenly. The result is a dried storage onion that will last up to another 2 months from harvest and has a much sweeter flavor than the green onions we started with.