Filter View by Entity Reference Value From Current Node
I got this working with this set up:

Contextual Filter: field_venue
-> Provide default value
 ->PHP Code
  -> PHP contextual filter code


  $node=menu_get_object();
  return $node->field_venue_for_catering['und'][0]['target_id'];



"field_venue" is the venue field from "Food"
"field_venue_for_catering" is the venue field from "Package".