Place loose sawdust in the bottom of the can to a depth of about three
inches. Measure the depth of the cooking pail. Turn a fold two inches
greater than this depth the entire length of the denim or other material
and make a long bag. Lay the bag flat on the table and fill it with an
even layer of sawdust, so that when completed it will still be half an
inch wider than the depth of the pail. Roll the bag around the cooking
pail, so that a smooth, firm nest is formed when the bag is placed
upright in the can on the top of the sawdust. From the remaining denim
or other material make a round, flat bag (the material will have to be
pieced for this). Fill this bag with sawdust and use it on top of the
cooking pail. The bags must be made and fitted into the can in such a
way that there will be no open spaces whatever between the sides of the
cooking pail and the can, or between the top of the cooking pail and the
cover of the can, through which the heat might escape.