I recall going out with my grandparents to pick them at a local UPick and being amazed at how tall the bushes were. I suppose as a city girl I thought they should be shorter.
My little guy and I drove to Magnificent Hill in Highland Grove to pick berries and WOW!! They have a bumper crop! I will have to go out again as I've already run out of berries. These are a heritage variety. The following recipe will make 8 250ml jars. More then enough for your family AND a few gifts along the way. You will need:
5 cups crushed raspberries
1 pkg Original Fruit Pectin CERTO
7 cups granulated sugar
Place 8 clean 250 ml mason jars on a rack in a boiling water canner or in the oven heating to 180°F. Set screw bands aside. Heat sealing discs in a pot of hot water. Keep jars and sealing discs hot until ready to use.
Crush raspberries, one layer at a time. I use my potato masher, works like a charm. Sieve some of pulp to remove seeds, if desired. I didn't for this batch because....well....true jam should give you seeds in your teeth!
Measure 5 cups prepared raspberries into a large stainless steel saucepan. Stir in CERTO until dissolved and add 1/2 tsp butter to reduce foaming.
Over high heat, bring mixture to a full rolling boil. Add all of the sugar. Stirring constantly, return mixture to a full rolling boil that cannot be stirred down. Boil hard 1 minute, stirring constantly. Remove from heat, skim off foam, if necessary.
Ladle hot jam into jars to within 1/4 inch of top for headspace. Wipe jar rim removing any jam residue. Place sealing discs in screw band with tongs. Screw band down until resistance is met, then increase to fingertip tight.
Water process jars for 10 minutes. The old fashioned way is to just apply the lids and allow to self seal. I have never had a problem this way but you never know so better safe than sorry.
Cool jars upright, undisturbed 24 hours. Listen for the POP! After cooling check jar seals. Sealed lids should curve downward and do not move when pressed. Label and store jars in a cool, dark place. For best quality, use home canned foods within one year although I bet you that this jam won't last this long!