Throughout the Submerged Swamps of the Erebus, a multitude of berry bushes can be found. Each of these berries serves a purpose, be it as a low-level food, for smoothies using the ErebusCo. Smoothie-matic 2000 or for literally growing Jade.
All berry bushes will only grow on Mud and *may* have to be in the dark, like other Erebus plants.
Swampberries are grown from the light green bushes you'll find most commonly in Submerged Swamps. These berries restore 1 hunger point when eaten (half a hunger icon) and are used to make Nothing-In-The-Middle smoothies.
These very romantically-shaped berries are grown from the dark green bushes that spawn occasionally in Submerged Swamps. When eaten, they restore no hunger, but instead restore half a heart of health. They are used to make Bryuf's Brew smoothies.
Arguably the most useful and definitely the rarest, these berries grow on golden bushes found very rarely in Submerged Swamps. They are crafted into pieces of Jade in a crafting table, arranged in a 3x3 square. Another-admittedly quite good-use for them is for Don't Meddle With The Nettle smoothies, which provide damage resistance for a short time.