You can research the recipe in your lab, and then just manufacture your own at will.[/quote]
You can manufacture Consignments of Scintillack Snuff. But doing that requires that you have at least 8 Knobs of Scintillack, and it does not let you manufacture Knobs of Scintallack themselves. You need to find Knobs elsewhere–in the Waswood, or along the shore when you dig using an Upper River Opportunity card.