Nestable food storage lids and container base

A food storage container comprising:

• a base having a base bottom panel with an upper side, a lower side, and a base perimeter, and having a cylindrical side wall extending generally upward from the base perimeter, the side wall terminating at a top edge and defining an open top;
• a lid having a top panel with a top side, a bottom side, and a perimeter terminating at a bottom edge, the top panel extending inwardly from the perimeter toward a center portion of the top panel, the top panel also having a first shoulder spaced inward from and around the perimeter and extending angularly downward relative to the top side, a first step extending inwardly from the first shoulder toward the center portion of the lid, a second shoulder extending angularly downward from the first step relative to the top side, and a recessed surface extending inwardly from the second shoulder forming the center portion of the top panel;
• and
• a nesting structure provided at least in part on a portion of the base bottom panel and at least in part on the lid top panel, the nesting structure adapted for registering a portion of the lower side of the base with a portion of the lid top panel both when the lid is in a standard lid orientation and when the lid is in an inverted lid orientation.