Patent ID: 8015915

Claim:
A fermentation apparatus comprising: (a) a container having a bottom, an outer wall extending upwardly from said bottom, at least a major part of said wall flaring outwardly at a predetermined angle relative to the periphery of said bottom, and an inner wall extending upwardly from said bottom and defining an annular space between said outer and inner wall; (b) a first insert for insertion into said annular space to a peripheral engagement with an inner surface of said outer wall at a first horizontal plane, said first insert comprising a bottom containment surface and at least one wall extending upwardly therefrom and dimensioned to fit over said inner wall; and (c) a seal between the periphery of the bottom of said first insert and said inner surface of said outer wall at or adjacent said first horizontal plane for defining a lees containment space at the bottom of said container below said first horizontal plane and a liquid containment space above said first horizontal plane.