Remembering the good old Koo Tomato Jam and would love a recipe to make instead of merely dreaming of it. Thanks in advance

Hello Eva, try this one, remember, 2.2 pounds make 1 kg:

Take nice ripe tomatoes, skin them, take out all their seeds, but save the juice to put with the sugar. Weigh the fruit, and to each pound, add three-fourths of a pound of sugar; boil some lemons soft, take one for each pound of tomatoes, mash them fine, take out the pips, and put the lemons to the sugar and tomatoes; boil slowly and mash the jam smooth with a silver spoon. When smooth and jelly-like, it is done. Put it away in glasses carefully.