Mrs. B added 4 cups of sugar. Then Mrs. B, following the old-fashioned “cup for cup” recipe, had to boil her fruit and sugar about 30 minutes before the jam thickened. This long boiling evaporated more than a third of the prepared fruit and carried off most of the natural fresh fruit flavor in steam.
Mrs. B was finished at 9:45.
Mrs. A got 10 glasses of jam from her 2 quarts of berries.
Mrs. B took 3 times as long and got only 6 glasses of jam.
Mrs. A had shown Mrs. B exactly what she meant when she said, “Certo really pays for itself!”