Grilling & Cooking
Players can grill caught creatures and eat them, including narrative/quest uses (e.g. delivering cooked food to an NPC).
An official screenshot directly shows an NPC grilling a seagull on a barbecue, confirming the mechanic independently of the achievement text. A gameplay video adds a specific unlock chain: grilling itself is gated behind defeating the Blue Shark mini-boss and handing it to the grill NPC for a Lighter. That specific chain is single-sourced (community-reported confidence) even though the grilling mechanic itself is verified. The same video confirms grilled fish sell for more (checking value with F shows an increase after grilling).