of the cylinder 14 or basket body portion to complete the outer stiff basket in this embodiment of the invention the fine stainless steel wire mesh liner 19 has a double thickness side wall formed by folding a single wire mesh section upon itself this folding line 20 being at the top of the liner 19 when the same is formed into a cylinder the longitudinal meeting edges 21 of the cylindrical liner 19 thus formed after the folding operation are sewn together by a stainless steel thread 22 the same continuous thread 22 is then employed to join a double thickness fine mesh circular bottom wall 23 to the cylindrical liner 19 to complete the liner which remains open at its top an arcuate heat resistant shield 24 similar to the shield 12 is sandwiched between the two walls of the cylindrical liner 19 before the bottom wall 23 is applied thereto the completed liner 19 can then be telescoped into the outer stiff wire basket and the top longitudinal wire extensions 18 are bent inwardly and downwardly around the folded top edge 20 of the liner to anchor it to the outer basket the radial stiff wire extensions 17 are forced through the side wall of the liner 19 and bent over on the inner face of the liner to further anchor the same within the outer stiff wire basket a.