In a Jam with Preserves? This Simple Hack Makes Fruit Jams Easy

My family loves jam—Dave's homemade sourdough toasted in our old-school two-slice toaster is most of the reason—so this time of year I make a lot of it. And I'm talking about gallons of the stuff, enough to last us until the fruit ripens again next summer. So far this summer alone I've made raspberry, marionberry, strawberry, blackberry and two kinds of plum jam, with Dave's special citrus marmalade rounding out the selection.

I'm not confident enough to start playing around with spices to my repertoire, and I do love the forthright flavors of the fruits all by themselves. There are those who make exotic combinations like plum cardamom or apricot chanterelle, both from my friend Jennifer Bright, my polestar for preserving ideas—see this recipe for Prune Plum Jam with Fennel Seed for a taste. (Her blog Culinaria Eugenius, from her previous life in Eugene, is a trove of recipes and inspiration.)

It's so simple to make perfect jam with this quick and easy technique.

This summer I did have a breakthrough when I ran across a blog called Divas Can Cook by Monique Kilgore, which she describes as centering on African-American Southern Cuisine. Her recipe for strawberry jam without pectin describes a technique calling for combining the fruit with sugar, warming it to melt the sugar, then bringing it to a rolling boil until it reaches 220 degrees. Done!

For me this eliminates the "will it set" problem of either runny preserves or a set that is too hard (and probably overcooked), plus the hassle of the plate-in-the-freezer, is-it-done guesswork. I've now used her technique with all the fruit jams I've made so far and they've all been exactly the right not-too-runny, not-too-thick consistency we love—Goldilocks would be so pleased! So thanks to Monique for setting me on the right path.

Fruit Jam

Adapted from Divas Can Cook by Monique Kilgore

So far I've used this technique to make strawberry, blackberry, marionberry, raspberry and plum preserves with excellent results.

1 lb. fresh fruit
1 1/4 c. sugar
1-2 Tbsp. fresh-squeezed lemon juice

Combine fruit with sugar and lemon juice in a large pot or Dutch oven. (If you have more than one pound of fruit, I use the same proportions as above for sugar and lemon juice.) Allow the fruit to sit and macerate for 15 minutes, then place over medium heat and simmer for 15 minutes until the sugar melts completely. (Kilgore mashes the fruit at this point for an even consistency, but I like my jam to have some texture so I skip that step.)

When the sugar has melted, turn up the heat and bring the fruit to a rolling boil and continue cooking until the temperature of the jam reaches 220 degrees. At that point transfer the jam to clean glass jars. If you're freezing the jam, simply allow it to cool to room temperature and transfer to your freezer. If you want shelf-stable jam, process the sealed jars in a water-bath canner following the canner directions.


Love figs? Get my recipe for a spectacular Balsamic Fig Jam that is amazing with cheeses or on toast.