Abstract: The present invention relates to a lid support and positioner that is quite versatile in how it can cooperate with the handle of cooking vessels to overly the handle, and to underly, engage and provide support for a cover or lid of the cooking vessel that is positioned off center relative to an upward opening cooking chamber of the vessel to permit the cooking chamber to breathe so as to minimize or prevent bubble-over or boil-over of cooking fluids. When used with cooking vessels that have elongate handles, the lid support and positioner may be adjustable positioned on the length of the handle to underly, engage and support a peripheral portion of an off-center cover or lid at a range of locations where the lid selectively covers/uncovers different proportions of the cooking chamber to thereby regulate and control the cooking temperature within the cooking chamber.