Lisa the Vegetarian/DVD features

"Lisa the Vegetarian" is included on the The Complete Seventh Season and The Simpsons: Raiders of the Lost Fridge.

Commentary
DVD commentary is included on The Complete Seventh Season boxset with comments by Matt Groening, David Mirkin, David S. Cohen, and Mark Kirkland.

Deleted scenes
Deleted scenes are included on The Complete Seventh Season boxset.

Paul & Linda's Lentil Soup
The recipe for the lentil soup is included on The Complete Seventh Season boxset.