Eywind and Nogmeldir have formed a plan to use Gandalf's draught to wreak havoc upon the goblins.
'By Durin's Beard, this will be a fine day indeed! This draught of Gandalf's is precisely what we need to make a shambles of the goblin's fire-pot camps.
'I went down to take a quick peek at the encampment while you were off to Rivendell, and I found what we're after. That big thing on the lower slope, with the scaffold and the huge burning cauldron on it? That is the heart of their production, and that is where we will strike.
'They've got stored materials for their fire-pots all over the camp -- all we have to do is slip Gandalf's draught into that cauldron and give it a tip, and the mixture should do the rest of our work for us... you mark my words!'
The burning cauldron is in a tall wooden structure in Ghâshru to the north-east.
Eywind told you to pour Gandalf's draught into the cauldron which the goblins use to produce their fire-pots and tip it over so the mixture will ignite the materials throughout the encampment.
Tell Eywind of the destruction wrought by Gandalf's draught at the burning cauldron.