An apparatus like a 'salad spinner' but for jars of gooey things like Nutella and peanut butter, to force the contents towards the lid and away from those impossible corners.-- Steamboat, Jun 02 2015 I thought this was the standard size? https://wcti12.com/...ound-tub-of-nutella [whatrock, Jun 01 2020] A special attachment for the food processor?-- wjt, Jun 02 2015 Could also be used as a gravy separator-- hippo, Jun 02 2015 [+]
Alternately you could simply buy the vat-sized product [link] and chase those corners clean with a putty knife.-- whatrock, Jun 01 2020 random, halfbakery