Place the container in a plastic 5 gallon bucket and add a gallon of HCl. Make sure the HCl level is over the top of the coffee pot by a couple of inches. Any chloride salts will dissolve. Any metallic gold will remain metallic and solid. Cover the bucket and let the chlorides dissolve. In about a week, uncover the bucket and carefully decant the solution into another bucket. Watch for any gold foils. If you see any, begin filtering from that point. Filter the remaining solution and check the contents of the coffee pot. There may still be solids or even a mass. If so, try to brake it up and just add to the bucket. Add fresh HCl until all of the solid mass dissolves.