A. Natural compounds in some foods corrode the metal and make a brown or
black deposit on the underside of the lid. This deposit is harmless.
Q. _When canned or frozen fruits are bought in large containers, is it
possible to can them in smaller containers?_
A. Any canned or frozen fruit may be heated through, packed, and
processed the same length of time as recommended for hot packs. This
canned food may be of lower quality than if fruit had been canned when
fresh.