The jar is excellent for pulsing nuts - grinds finely without releasing oil. However, it is not suitable for wet grinding. The liquids force itself through the air vents on the plastic lid and get under the metal disc on the outside of the plastic lid. The metal disc is not removable so no way to clean it. If this design flaw can be rectified, this would be great for wet grinding as well.
It is very nice Contact Grill, the performance is amazing, the product is really reliable and easy to use