Subnautica 2 Food, Water & Health Recipes Complete Guide 2026

Food Recipes and Cooking

Cooking is the foundation of food management in Subnautica 2. Raw fish provides reduced nutrition and risks food poisoning, while cooked fish offers significantly higher food values and is safer to eat. The Fabricator serves as your cooking station, converting raw fish into cooked meals. The Peeper, the most common edible fish, yields 18 food cooked versus 12 raw. The Reginald is the nutrition champion at 25 food cooked, making it the best single-fish meal for expeditions.

Beyond basic fish, the Fabricator supports combined recipes that yield bonus nutrition. For example, combining certain fish with Creepvine or edible flora creates dishes that provide both food and water, reducing the number of items you must carry. The Boomerang Stew, made from Boomerang fish and a common aquatic vegetable, provides 22 food and 8 water in a single item, an excellent efficiency pick. Experiment with combinations at the Fabricator, because the recipe list rewards variety and some dishes provide small health regeneration bonuses.

Cooked food spoils over time, decaying into rotten food that causes illness if eaten. To manage this, cook only what you need for the next expedition, and store raw fish in a waterproof container where it lasts longer than cooked food. The Curing Rack, unlocked with a Bio Lab, preserves fish indefinitely using Salt, converting them into cured food that never spoils. Cured food provides slightly less nutrition than cooked but eliminates spoilage entirely, making it the ideal expedition ration. Always carry cured fish for long trips and reserve cooked food for base consumption.

Water Production and Filtration

Water management is arguably more critical than food, because thirst drains faster and dehydration kills more quickly than starvation. The baseline water source is the Bladderfish, which can be processed at the Fabricator into Filtered Water yielding 20 water per fish. This is reliable early but requires constant fishing. A more sustainable option is the Water Filtration Machine, a base module that draws power to produce Large Filtered Water (50 water) over time. It consumes significant power but provides a steady supply without manual effort.

The Water Filtration Machine is the cornerstone of a self-sufficient base. Place one in your hub base and keep it powered, and it will produce a Large Filtered Water bottle roughly every 15 minutes. This eliminates the need to fish for Bladderfish and frees you to focus on exploration. The machine requires a base with adequate power; a solar panel setup in shallow water or a thermal plant in a vent-adjacent base easily supports it. Always store spare Large Filtered Water bottles in waterproof storage for expeditions.

For field water, carry Bladderfish-derived Filtered Water or Large Filtered Water from your filtration machine. Avoid drinking salt water directly, which increases dehydration. The Efficient Metabolism biomod reduces water drain by 15 percent, extending the value of each bottle. Combined with the Aqua Lungs biomod for extended dives, this lets you stay out longer without resupplying. For deep expeditions, pack at least two Large Filtered Water bottles and three cured food items per hour of planned exploration.

Health Recovery and First Aid

Health management is straightforward but often neglected until it is too late. Health regenerates slowly over time when your food and water levels are above 80, so maintaining full hunger and thirst meters provides passive healing. The First Aid Kit is the primary active healing item, restoring 50 health instantly. Craft it at the Fabricator using 1 Fiber Mesh and 1 Disinfected Water, and always carry at least two when exploring hostile biomes. First Aid Kits do not spoil, so stockpile them at base.

The Field Medic biomod boosts passive health regeneration by 50 percent, dramatically reducing downtime between encounters. This is especially valuable for players who push into predator-heavy biomes, because it means you recover from non-lethal hits without burning First Aid Kits. For players without the biomod, the strategy is to retreat to a safe depth and wait for passive regeneration after each encounter. Never push into a new biome below 75 percent health, because a single predator hit can drop you below the survival threshold.

Be aware of status effects that affect health. Food poisoning from spoiled food drains health over time and must be cured with medication or waited out. Radiation poisoning, encountered near the Aurora-class wreckage, requires a Radiation Suit and reduces health if unprotected. Deep-pressure damage occurs if you exceed your crush depth without adequate protection. Carry appropriate suits and cures for each environment. A well-stocked medical kit, with First Aid Kits, antidotes, and a Radiation Suit, is as essential as food and water for deep operations.

Farming and Sustainable Food Systems

The ultimate solution to food and water management is sustainable farming. The Alien Containment module, built inside a base, lets you breed fish and grow aquatic plants in a controlled environment. Place two of the same fish species in a containment unit with appropriate flora, and over time they will reproduce, creating a self-renewing food supply. Stock your containment with Peepers, Reginalds, and Bladderfish for a balanced yield of food and water, and harvest as needed without depleting wild populations.

For plants, the Exterior Growbed and Interior Growbed let you cultivate edible flora. The Bulbo Tree and Marblemelon are the most efficient food plants, each providing high food and water values per harvest and regrowing quickly. A single Exterior Growbed with Bulbo Trees can sustain a player indefinitely with minimal maintenance. Growbeds also support crafting plants like Creepvine and Acid Mushrooms, reducing the need to forage for materials. Place growbeds at your hub base for a steady supply of both food and crafting ingredients.

A fully sustainable base combines Alien Containment for fish, Growbeds for plants, and a Water Filtration Machine for water. This trio eliminates the need to hunt or forage entirely, freeing you to focus on exploration and progression. The upfront investment in materials and power is significant, but the long-term payoff is enormous. Once your farming system is operational, you will wonder how you ever managed without it. Sustainable farming transforms Subnautica 2 from a constant survival struggle into a relaxed exploration game, and it is the recommended end-state for every playthrough.

• Alien Containment for renewable fish (Peepers, Reginalds, Bladderfish)
• Exterior Growbed with Bulbo Trees and Marblemelons for food
• Water Filtration Machine for steady Large Filtered Water
• Curing Rack for non-perishable expedition rations
• Efficient Metabolism biomod to extend supplies