It's a lid for a Tupperware box that's actually another Tupperware box (held upside down). Instead of being a flat lid. Please tell me this is baked already.
So you put a big mountain of salad in the first box and instead of having to squash it down and mash up all the lettuce, it just sits nicely in its big extra-height Tupperware palace.-- cheesecake, Apr 13 2007 (?) Tupperware competition http://www.translationsintupperware.com/....though most of the entries I looked at were as weak as dishwater [xenzag, Apr 13 2007] The existing "Stuffables" series has lids that expand upwards (with kind of a circular accordeon fold) if you need them to - that sort of addresses the same problem, rather cutely, too.
But with tops so large as to be their own container, contents would fall out once you open it - that's my usual problem with grocery-store salad containers with bulging upper lids.-- jutta, Apr 13 2007 Tupperware are running their annual design competition.... see link-- xenzag, Apr 13 2007 I've seen plenty of plastic containers like that, though not necessarily Tupperware.-- DrCurry, Apr 13 2007 random, halfbakery