You will need to hunt for these. They are in the area around ( -274, 35, -232 ) /waypoint -274, 35, -232 The Gava Berry bushes are found at the base of several of the trees very cleverly hidden amongst the other bushes. They sparkle, but not brightly. Use Region of Interest boundaries to keep yourself on track.
Collect monster hops (0/8). These are also found at the base of trees.
The hops are in the blue area on the map and in the area to the south of it.
Mash the berries and hops in the bucket near Lagni ( -695, 7, 283 ) /waypoint -695, 7, 283