This morning I made plum jam, my favourite, and as I bottled it I thought of my mother. I was using the same recipe book she would have used, published by the manufacturers of Edmonds Baking Powder. I have a German recipe book also published by a baking powder maker, Dr Oetker, so I assume recipe books were a good advertising tool in years gone by.
Anyway, the recipe book said to use 6lb of plums and as I bottled I thought of how my mother's generation must have had very large preserving pots to make such quantities. I had half the amount and made more than 7 jars of jam.