Sap

A fluid obtained from trees.
Overview
Sap is a common forage item that drops from trees when they are tapped, chopped, or otherwise affected by gathering actions. It is one of the game’s most basic crafting materials, and although it has little direct value on its own, it is used in several early-game and utility recipes. Like most simple resource items, it is easy to accumulate in large quantities once a player begins cutting trees regularly.
Sap has a few practical uses beyond simply being sold or stored. It can be used in the 


Sap is also included in at least one crafting recipe unlocked through advanced progression: 

In play, Sap is best treated as a low-priority but useful stock item.
- It is common enough that players often gather it passively while clearing trees.
- It is useful for tailoring and dyeing, so it is worth saving a few stacks if you plan to use the Sewing Machine or dye system.
- It can be traded with the Raccoon’s wife once that system is unlocked, giving it a small late-game utility.
- It is a crafting ingredient for Deluxe Fertilizer, which makes it relevant even after the early game.
Because of how frequently it drops, Sap is usually not difficult to replace. Players who do not use tailoring, dyeing, or the specific trade can safely sell or discard excess copies, but keeping some on hand is sensible since it can appear in several different systems and is easy to forget when needed.
Official description
A fluid obtained from trees.