The present disclosure provides systems and methods for grinding and storing, for example, herbs or spices. In particular, the grinding device of the present disclosure is preferably integrated directly with a mason jar. The grinder can generally include a bottom portion configured to be inserted into the threaded mouth of the mason jar and captured thereto with a common mason jar screw ring. The bottom portion can include a bowl with a plurality of teeth extending upward therefrom. The grinding device can additionally include a top portion with an annular wall extending from a disc portion and teeth extending from the bottom surface of the disc. The top portion can be sized and dimensioned to be received in and engage the bowl of the bottom portion. The user may twist the top portion freely in the bottom portion in order to grind materials therein.