When I spent a day making jams with Stefano Frigerio, a chef-turned-food-producer, I knew I had found a kindred spirit. Frigerio, who sells his Copper Pot Food Co. jams, sauces, and pastas at Washington, D.C., farmers’ markets, resisted set-in-stone recipes and instead cautioned me that the most important thing is to taste, especially if you don’t want the jam to be too sweet. In the true spirit of preserving, use only fresh, local, in-season berries for this jam. (There’s really no reason to preserve something that you can get all year-round, so why use supermarket strawberries?) Without any added pectin, this jam has a slightly loose consistency, which I like, given that my favorite use is to stir it into yogurt.
If you don’t want to fully seal and can the jam, you can pack it into clean jars, tighten the lids, let cool to room temperature, and refrigerate for several months. Or pack into freezer-safe plastic bags, squeeze out the extra air, seal, and freeze for up to one year.
