growers deliver fruit dry in lug boxes, but bruising and crushing are
liable to occur during transportation. The fruit is delivered into a
hopper filled with water, then from the hopper into boxes where the
fruit is drained. The fruit is delivered in the factory to be first
sorted which is done on a moving belt, and here all stems and defective
fruit are removed as the fruit is carried slowly past the workers who
sit or stand on either side. In some factories the sorting is done after
the fruit is pickled, but is much more difficult due to the change in
color
[Illustration: Sorting Olives for Quality by Hand]
through the action of the lye and of oxidation. The fruit is next passed
to the grader, which separates the various sizes. From the grader the
three largest sizes are each delivered to a moving belt to be sorted for
color, degree of ripeness, and culls, as the curing must be modified to
suit the particular degree of ripeness, a crisp firm olive requiring a
heavier treatment than does a riper, softer-textured one. The olives as
sorted, are passed to small side belts, which thus deliver fruit uniform
in size and color to the receiving boxes. Great care is taken in the
sorting of olives, different varieties are not mixed, nor even fruit of
the same variety but from different localities. In grading for size by
machine, 1/16 of an inch is the variation between each size and the
next; those less than 10/16 are removed to be used for other purposes.
When the minimum is due to the variety and not to stunting, the fruit
may be pickled, because aside from the larger proportion of pit, the
flavor is equal to that of the large fruit. Usually the smaller olives
were used for oil, but more recently are used for relishes and sauces.
The sizes upon which the different grades are made are based upon the
short diameter of the fruit, and have been adopted by the California
Olive Association:
Number Diam. in
Grade per lb. inches
Standard 120-135 10/16-11/16
Medium 105-120 11/16
Large 90-105 12/16
Extra Large 75-90 13/16
Mammoth 65-75 13.5/16
Giant 55-65 14/16
Jumbo 45-55 15/16
Colossal 35-45 16/16
Public-domain text, read in full here on John Shaqi.
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