Roasted Toma Root is obtained by cooking a Toma Root over a Campfire, Fire Pit, or Star. It restores 17 more Health than the raw version and takes 10 days to spoil. It has the same uses as raw Toma Root.
Toma Roots are featured in The Gorgeevent in Don't Starve Together. They grow from Spiky Seeds, which can be bought from Pipton for one Old Coin. A Toma Root can be made into a Roast Toma Root by being cooked at the Campfire next to the Swamp Pig Elder. Toma Roots can be used in a variety of Cooking Recipes exclusive to The Gorge.
The Toma Root was originally exclusive to The Gorge event, but it was later introduced into the main game in the WarlyCharacter Update.
The binomical name Wickerbottom gives for the fruit and its seed, Solanum lycopersicum, is identical to that of normal tomatoes.
It is unclear how the developers settled on the name "toma root". The word "tomato" appears much more often in game text than the phrase "toma root", appearing in examination quotes, the item description of Rude Interlude, and the Plant Registry "field note" of the Toma Root plant.
One potential explanation for their name could be the fact that all crops would grow within soil in The Gorge event, and since Toma Roots resemble Tomatoes, which do not grow within the ground directly but rather from a vine, they settled on the name "Toma Root".