rehash

To hash (chop food into small pieces) again.

I never did care for Sunday joint that was served up cold on Monday, hashed on Tuesday, rissoled on Wednesday, and re-hashed on Thursday[.]

To repeat with minor variation.

Today's parliamentary session only rehashed last week's arguments.

The CEO of the company only rehashed a speech for the news conference.

To analyze a prior contentious or embarrassing event.

Let's not rehash what we did last night.

To recompute the structure of a hash table, taking into account any newly added items.

Something reworked, or made up from old materials.

He wrote a bad rehash of an earlier essay.

A recomputation of the structure of a hash table, taking into account any newly added items.