The Kova™ was developed by a Shabbat-observant woman, who needed an extra warming surface to warm foods on Shabbat after unsuccessfully trying to balance pans of food on the crockpot lid.
The design is intended to provide a safe, flat, surface to warm foods while the crockpot was cooking foods. The generous surface can be used to warm foods. It can be used as the only warming surface or, if you need to warm many pans of food, it can be used in addition to your hot plate, as well.
The patented bumper system was designed to accommodate a variety of oval and round crockpots – those used most frequently.
Now Star-K approved, when used according to directions.