Easy Peanut Butter Jar

(a) Easy PB&J Jar: Straight walls and double opening allows users to retrieve all of their peanut butter.
(b) Conventional Jar: Curved corners and undercuts trap and waste large amounts of peanut butter.

Peanut Butter: it's the greatest invention ever. The only downside to it, though, is the jar that it comes in. How many times have reached the bottom of the jar only to be frustrated at not being able to get those last few bits?
The Easy PB&J Jar is a jar with two lids that allows you to access all of your peanut butter easily without having to resort to breaking open the jar. As you near the end on one side, simply flip the jar over to get the rest. The straight and smooth internal walls also ensure that no peanut butter is ever left behind a nook or cranny like existing jars.