Cellar

Overview
The Cellar is a 3-slot Food Production Building providing, and. It provides with the  buff, adding +10% double yield chances to any  working there. It is unlocked at Level 3.

The Cellar is a species-specific building. It can show up as a Blueprint choice only when are present in your settlement. This restriction can be bypassed if you find a Cellar as a Ruin or Flawless Cellar, or with a wildcard Blueprint pick from:
 * Overgrown Library - World Map modifier
 * Smuggler's Visit - Legendary Cornerstone
 * Contraband - Perk available for purchase from some Traders