Saw Mill Site Farm is located in Deerfield, Massachusetts. Every jar of Saw Mill Site Farm horseradish is hand-prepared in small batches from high-quality #1 US-grown horseradish roots. Unlike large-volume, commercially-prepared horseradish products, we don't add any preservatives or "heat-inducing" additives to our condiments. The horseradish roots we use are grown along the banks of the Mississippi River in southwestern Illinois. They are cleaned by hand one day prior to processing, then washed and given a kosher-salt bath to ensure the purity of flavor.