Greengage Jam, or Marmalade

• Greengages, stoned and skinned, 6 lbs.:50 minutes.
• Sugar, 4½ lbs.:5 to 8 minutes

When the plums are thoroughly ripe, take off the skins, stone, weigh, and boil them quickly without sugar for fifty minutes, keeping them well stirred; then to every four pounds add three of good sugar reduced quite to powder, boil the preserve from five to eight minutes longer, and clear off the