Preserve of the Magnum Bonum, or Mogul Plum

• Mogul plums, skinned and stoned, 6 lbs.: 40 minutes.
• Sugar, 3 lbs.: 5 to 8 minutes

Prepare, weigh, and boil the plums for forty minutes; stir to them half their weight of good sugar beaten fine, and when it is dissolved continue the boiling for ten additional minutes, and skim the preserve carefully during the time. This is an excellent marmalade, but it may be rendered richer by increasing the proportion of sugar. The blanched kernels of a portion of the fruit stones will mu