NOTE: 12 lbs of plums (unpitted) makes 27 cups diced and 21 cups cooked plums, which fills 18 pint jars. 15 lbs of plums should make 20 pint jars.
Cook all the fruit at once to make the prepared fruit. Then, make jam in batches, using 12 cups of prepared fruit, 2 pectin pouches, and 16 cups of sugar. Should be 2 batches if using 15 pounds prepared fruit.
BRING boiling-water canner, half-full with water, to simmer. Wash jars and screw bands in hot soapy water; rinse with warm water. Pour boiling water over flat lids in saucepan off the heat. Let stand in hot water until ready to use. Drain well before filling.
PIT plums. Do not peel. Finely chop or grind fruit. Place fruit in saucepan; add water. Bring to boil. Reduce heat; cover and simmer 5 min. Measure exactly 6 cups prepared fruit into 6- or 8-qt. saucepot.
STIR pectin into fruit in saucepot. Add butter to reduce foaming. Bring mixture to full rolling boil (a boil that doesn't stop bubbling when stirred) on high heat, stirring constantly. Stir in sugar. Return to full rolling boil and boil exactly 1 min., stirring constantly. Remove from heat. Skim off any foam with metal spoon.
LADLE immediately into prepared jars, filling to within 1/8 inch of tops. Wipe jar rims and threads. Cover with two piece lids. Screw bands tightly. Place jars on elevated rack in canner. Lower rack into canner. (Water must cover jars by 1 to 2 inches; add boiling water if needed.) Cover; bring water to gentle boil. Process 10 min. Remove jars and place upright on a towel to cool completely. After jars cool, check seals by pressing middles of lids with finger. (If lid springs back, lid is not sealed and refrigeration is necessary.)
kraft kitchens tipsHOW TO MEASURE PRECISELYTo get exact level cup measures of sugar, spoon sugar into dry metal or plastic measuring cups, then level by scraping excess sugar from top of cup with a straight-edged knife.ALTITUDE CHARTAt altitudes above 1,000 feet, increase processing time as indicated. 1,001 to 3,000 feet: Increase processing time by 5 min. 3,001 to 6,000 feet: Increase processing time by 10 min. 6,001 to 8,000 feet: Increase processing time by 15 min. 8,001 to 10,000 feet: Increase processing time by 20 min.JAM OR JELLY DIDN'T SET?Every once in a while, you may find that your jam does not set the way you expected. If your efforts resulted in a runny batch, try our Remake Directions to improve your finished jam. If your jam still doesn't set, you can always use it as a glaze or syrup.
View line-by-line Nutrition Insights™: Discover which ingredients contribute the calories/sodium/etc.
|Serving Size: 1 Serving (0g)|
|Recipe Makes: 8 Servings|
|Calories from Fat: 0 (NaN%)|
|Amt Per Serving||% DV|
|Total Fat 0g||0 %|
|Saturated Fat 0g||0 %|
|Monounsaturated Fat 0g|
|Polyunsanturated Fat 0g|
|Cholesterol 0mg||0 %|
|Sodium 0mg||0 %|
|Potassium 0mg||0 %|
|Total Carbohydrate 0g||0 %|
|Dietary Fiber 0g||0 %|
|Sugars, other 0g|
|Protein 0g||0 %|
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