No. 4 Cooking Recipe Data Chip

 is a data chip used to upgrade Ack.

Obtaining
can be found as a random rare drop while mining Iron Ore patches in the Abandoned Ruins #2, Desert Abandoned Ruins, or Somber Marsh Abandoned Ruins.

can also be found as a detectable relic in the Desert Abandoned Ruins or the Somber Marsh Abandoned Ruins. It will show as a Cooking Recipe Database when scanned with the upgraded Relic Scanner.

Usage
No. 4 Cooking Recipe Data Chip can be used to upgrade Ack. Ack will learn to cook Steak with Coconut Juice after the upgrade.

Trivia

 * Only one is required to unlock Ack's respective recipe, the rest can be safely sold.