Olives
Olives are the fruit of olive trees. They can be used to make olive oil.
Olive Trees
Olive Trees generate naturally in the overworld in forests, plains, and mountains. They do not generate in hot and cold biomes. Leaves of the mature tree will occasionally produce and drop Olives and rarely Olive Pits. When cut down some Olives and Pits may also drop, along with Olive Wood and some Sticks.
You can plant your own Olive Tree on dirt in any biome and season using Olive Pit or Olive Sapling. Bone Meal can be used to grow it. Worth noting that you get more fruits and pits by breaking leaves, while natural producing and cutting the whole tree leads less.
Food
Olives can be eaten recovering 1 Hunger Point and 1/3 Saturation Point, inflicting Nausea II for 10 seconds on the player. It is better to put them in a Crushing Tub and make Olive Oil. Olive Oil can be crafted with any food to give it ''Olive Oiled'' Trait which increases the food Hunger Recovering and Saturation.
Usage
Olives can be used to craft Almanac. Olives can be combined with Olive Oil to make them more saturating, too.