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Similarly in second quality mixed jams we have Raspberry and gooseberry
(20 per cent., 10 to 10) and Gooseberry and raspberry (20 per cent., 15 to 5),
Plum and apple (20 per cent., 10 to 10) and Apple and plum 20 per cent.
(15 to 5), etc.
A footnote states that the proportions in two-fruit jams not mentioned
are to be on the same basis as in those given above.
There may be a particular reason for this ratio but it would seem that
the basis is that the cheaper fruit is in equal proportion when mentioned
last and in a proportion of 3 to 1 when mentioned first. This would not
be obvious to the purchaser of the jam.
The determination of the amount of fruit in a jam is a difficult matter
owing to the wide range of variation in the composition of the fruit. The
determination may be made from the amount of insoluble solids, pectin and
acidity found in the sample.
These figures cannot however be relied on. The insoluble solids of the
fruit may have been partially expressed for jelly making beforehand and would
not therefore truly represent the original fruit; the acidity is unreliable as
citric, tartaric and malic acid may be added without declaration and the
pectin figure may be affected as no declaration of added fruit juice and/or
pectin is required in the case of first quality jam so that presumably fruit
juice and/or pectin may be added.
Permitted colouring matters may be added and the addition of glucose
is not prohibited.
All jams however must contain a certain minimum percentage of total
soluble solids and second quality jams must be described by the name of the
fruit or fruits together with the words "with other fruit juice" in letters
of equal size, except where in mixed jams no fruit juice or pectin has been
added.
Ground
Ginger.
4 samples were analysed, of these 2 were adulterated.
S 28 (Informal). Contained 370 parts sulphur dioxide per million.
M 19 (Same vendor as S 28). Contained 370 parts sulphur dioxide
per million.
Proceedings were taken against the retailer and the wholesaler. The
retailer who stated that the boxes containing the ground ginger were marked
"Finest Ground Ginger, Genuine " and produced an invoice relating to the