Note: These are inside the Den behind the Elder. Track Harvestables does not work on these. You can find all three ingredients in the pools that are behind the elder. The bunch of fungus is near the pool.
Prepare a Juicy Fish Roll at the Cooking Pot at ( 1095, -295, 3378 ) Copy/waypoint 1095.04, -295.19, 3377.81 as an offering to show your respect to the elders.
Return to the elder and give him the fish roll, then speak with him further.
Gather paper for the elder from the roll of Blank Parchment, on the table at ( 1110, -293, 3378 ) Copy/waypoint 1110.48, -292.63, 3377.90. Look for a small tube on one of the tables near him.
Give the paper to him so he can draw you a map to the dwarven mines.