It's jam you make and store in your freezer, that's all. I've been doing freezer jam for several months now - it's quick and easy, and costs less than boughten jam. A quick Google* will give you dozens of recipes, but they all come down to about the same proportions. Today, I used this one to make Strawberry jam, which gets consumed at an alarming rate at my house.
I started with some organic strawberries**, some sugar and some pectin.
Cut up the strawberries and mash them in a bowl***, then mix them in with the sugar:
Bring the water and pectin to a boil and add that to the strawberries and sugar:
Then you just put it in jars:
Let it sit for 24 hours, then stick 'em in the freezer. Bing bang boom, you got some jam.
* - Yes, I know we're not supposed to use "Google" as a verb, but I will anyway. Deal with it, Google.
** - "Organic" as in, grown according to organic farming principles, because all food is organic. I took chemistry, me.
*** - IT HAS BEEN 8 DAYS since there was an injury requiring medical treatment in my kitchen. Shut uuuppppp!