New YorK AGRICULTURAL EXPERIMENT STATION. 61 
varied but little, the better posted men being slightly . more 
critical; and may be summed up as follows: 
Alaska No. 1—All pass without question. Color fine, liquor 
slightly darker in those heated thirty-five minutes and longer. 
Liquid not muddy in any. No scorched taste except faint 
trace in those heated forty and forty-five minutes. 
Alaska No. 4.—Color dark in all but not muddy. Possibly due 
to short blanch. Those heated thirty minutes or more would 
be liable to complaint on color. No scorched taste. 
Advancers No. 3.—All pass without question. Color good and 
liquor not muddy. Very faint scorched taste in those heated 
forty minutes. 
There was a noticeable decrease in all objectionable results of 
the high heating during the interval between the two examina- 
tions except in the case of the color. When first examined the 
liquid was but slightly colored while the peas were noticeably 
darkened. On standing this discoloration passed from the peas 
out into the liquor. It is thought that by lengthening the blanch- 
ing process this trouble could be largely overcome. 
The decrease in the scorched flavor was especially marked. Im-- 
mediately after cooking it was very noticeable in certain cases 
while at the later examination it was not detected at all by a 
number of the judges. 
CONCLUSION. 
Swelling of canned peas is caused by bacteria which form 
such resistant spores as to survive ordinary processing. 
In the outbreak studied, 240° F. (1153° C.) for 30 minutes 
was found to be sufficient to destroy this germ when present in 
the cans in large numbers. This temperature has since been 
used by the factory with complete success. 
Except under unusual conditions this amount of heating does 
not injure the commercial value of the peas. 
The aim of this investigation has been to determine a safe 
minimum amount of heating. The amount additional, if any, 
which should be used in any case to produce the desired cook is 
a matter for the judgment of the processor and one in which he 
will display his mastery of his art. 
