YumYum

 was a pre-War company in the United States, producing packaged foods. YumYum deviled eggs were their major product.

The box of deviled eggs lists "Dried" as one of the food's features, meaning that YumYum probably used freeze-drying to produce foodstuffs.

Appearances
The YumYum name has only appeared in Fallout 3, on the box of their product; YumYum deviled eggs.