Hints from the Health Department. Leaflet from the archive of the Society of Medical Officers of Health. Credit: Wellcome Collection, London
[Report of the Medical Officer of Health for Southwark, Borough of]
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I have received the following report from Mr. J. A. Syms, Sanitary
Inspector:—
ICE CREAM.
Systematic inspection of the premises and plant of all Makers and
Sellers of Ice Cream has been carried out during the season of 1937.
Special attention has been given to the method of sterilization of plant
and utensils, and the standard of cleanliness enforced.
Bacteriological samples of Ice Cream were procured and submitted
for analysis. To a great extent this was confined to Italian Ice Cream,
as this is a commodity exposed to greater possibilities of contamination,
owing to it being sold from street barrows. In each case a sequence of
samples was obtained, the first being one of the boiled or prepared mix;
second, the mix immediately after freezing, and the third the final mix
under the conditions of sale. The data thus obtained proved to be of
considerable value and evinced the fact that where the first sample was
low in the bacterial count, the second and third samples were relatively
higher but well below the permitted count, i.e., the Pasteurised Milk
Standard. The good results thus obtained tend to prove that the
essential details in regard to the prevention of contamination are being
better understood and guarded against. The period of cooking of the
prepared mix loomed large as a factor in the presence of bacteria on
analysis. Where the sample was high in the bacterial count, the makers
were interviewed and persuaded to increase the period of cooking;
further samples were taken with very favourable results. The value of
this side of the work cannot be over-estimated, and although it is no
easy matter to explain to many of the Italian trade the meaning of the
bacterial count, it inspires them with a keen desire to obtain a good
result and a readiness to adopt the advice given.
At the close of the year the Register reveals the following facts:—
Manufacture and Sale of Ice Cream.
Number of Premises on the Register at end of 1936 92
Number of Premises registered during 1937 5
Number of Premises discontinued during 1937 14
Number of Premises on the Register at end of 1937 83
Sale of Ice Cream only.
Number of Premises on the Register at end of 1936 96
Number of Premises registered during 1937 43
Number of Premises discontinued during 1937 0
Number of Premises on the Register at end of 1937 139