if its the quest I think it is, which is the one to apologize to gadg for me the quest behaved wonky. It had two lines of:
2/2
2/2
they are of the same ingredient so I ran back with 2 and nothin happened, realized I actually needed four. That fixed it for me, hopefully it will for you?
Once your quest shows:
4/2
4/2
try again and if it was what was going on with mine, he'll take them and go :-D