From Unofficial Stationeers Wiki
Tomatoes can be grown in hydroponics to yield 3 x Tomato.
Provide water into piping and CO2 in atmosphere Min ~7.7Kpa. The plants will produce oxygen and heat which you will need to remove.
Can be consumed raw to restore 30% of hunger.
Recommended to produce 5xcooked Tomato in Microwave, to make Tomato Soup in the Basic packaging machine, so it fills really much hunger and doesn't decay.
- In Portable Hydroponics Tomatoes yield 3 x Tomato per plant.