“Urban Preservation I: Jam Session”
Who doesn’t love jelly? Slather it on some bread and add a bit of peanut butter, and you’ve got a great snack for your little one. Spoon some on your toast in the morning, and kick up your breakfast a notch. And, truth be told, it makes a great topping on ice cream. For most of us, though, we hand our jam making over to people like Smuckers or Welch’s, and in turn, they use things like high fructose corn syrup to cheapen the product as much as possible. Oh, it still tastes good, but really, commercial jam isn’t that great for you.
They’ve got us over a barrel though. They’re willing to bet that you’re not going to spend the time and effort in making your own jam. Those little jars of HFCS and fruit bits? They sing the siren’s song of the 21st century: “Convenience.” Hand over three dollars, and that sugary suspension of fruit can be yours. And, honestly, I can’t blame anyone. Making jam is easy. Preserving it is not. There’s a lot of steps, but really, none of them are especially difficult. This would be my first time making any sort of jam, so, like frying just a chapter before, I was a little apprehensive. Still, nothing for it but to go through it, and so off I went getting ready to make some spiced blueberry jam.
The first step to preserving? Sterilize all your equipment. A dozen jars, rings and lids, a ladle, a set of tongs and a plastic funnel were all washed in hot soapy water, then everything but the lids were placed in a pot of water and set to a boil. The water boiled for ten minutes to kill any microbes that happened to be in the water, and then the heat was turned off. Five minutes later, the lids were added, since adding them ahead of this time would have melted the sealant.
While everything cooled, I set to making the jam. Since I couldn’t buy less than a dozen eight ounce jars, I decided to double the recipe, so 48 ounces of frozen blueberries were added to another pot. I sprinkled the pectin onto the berries, then added some freshly ground nutmeg and star anise, as well as some ground ginger I had in my cupboard. Some lemon juice and cider vinegar added the necessary acid for the pectin to take hold, and I let the berries release some of their liquid. I mashed them to further release juice, and then brought the whole mess to a boil. At that point, I added nearly three pounds of sugar, and a cup of water. I let the mixture come back to a boil, and then removed from the heat after a minute.
Congratulations, jam! Now the other half – preservation. I fished out the jars, tongs, rings ladle and funnel from the pot, and began to spoon the hot mixture into the jars. I left a good bit of space in the jars, since I had to trap some air in there to create the vacuum later. Once the jars were full, I fished out the lids, and tightened them with the rings. I placed the jars back into a pot filled with water, and brought everything to a boil for five minutes. They were then removed from the water. Since I could only do half the batch this way, I repeated with the remaining jars.
As the second batch got up to temperature, I began hearing encouraging sounds from the first batch. There’s some interesting physics going on with the jars, but I won’t bore you too much with them. Basically, boiling the jars creates a bunch of steam inside the jars, and a lot of that escapes around the rings and sealant. When you remove the jars from the water, though, they begin to cool down again, and the hot air inside the jar cools down and takes up less space. Eventually, once it gets to room temperature, it creates a vacuum, making an airtight seal between the outside world and the jam. Chalk one more up to science!
So I made a dozen cans of jam, but how was it? I liked it a lot, as a matter of fact. It has some wine notes to it, and I can barely taste the licorice flavor of the anise. It’s there, to be sure, but it’s a background note. You really only taste it in the finish. I would have preferred the nutmeg and ginger to have a stronger presence, and I think a second batch would increase both in order to bring those flavors forwards. Still, a very good recipe. I’m not sure I’m willing to go to all this trouble just to have a supply of jam, but it’s a fun experiment and a good skill to have learned.
Next Time: I hit the sauce.
Recipes: