Bring the pineapple to a boil over high heat and then add 1 box of powdered pectin (1.75 ounces). Boil 1 minute, then add 3 cups sugar (note that pineapple jam with pectin requires more sugar and will need a 1:1 ratio of crushed pineapple to sugar to gel). Return to a boil for 1 minute, then ladle into prepared jars.
Place the pineapple in a jam pot and add in 1 1/2 to 2 cups of sugar. More sugar will yield more jam, and as you might imagine, is sweeter.
Ingredients 1 1 pineapple , peeled, cored, and chopped into ~1-2 inch pieces 2 1 cup water 3 1.5-2 cups sugar , to taste 4 1 tablespoon lemon juice (from ½ lemon) 5 Optional: a few pinches of cinnamon or few slices of fresh ginger , to taste More ...
This jam comes out amazing whether you've got a disappointing not-so-sweet pineapple at the store, or a delicious fresh, juicy, sweet, in-season pineapple. Both kinds of pineapples work just fine for this pineapple preserves recipe, you might just need to adjust the amount of sugar you need.