In a 3-quart stainless steel saucier, combine blackberries, sugar, and salt. Using a metal spatula, crush the berries until the sugar dissolves (the spatula’s comparatively sharp edge will minimize splashing compared to the dull edge of a potato masher). Using a kitchen scale, weigh the pot and fruit together, then make note of that number to track the reduction. Cook over medium heat until bubbling hot, then simmer, stirring constantly, until the mixture has reduced by 14 ounces (395g). The time required will vary depending on the size, shape, and type of cooking vessel, as well as the size and output of the burner, but expect about 30 minutes, and adjust heat as needed to proceed at a similar rate. (Try not to over-reduce the fruit, as it can produce unwanted flavors, but if you do accidentally do it, you can add back just enough water to correct the weight.)
Published at Wed, 27 Jun 2018 12:58:06 +0000