How to Make It
In a medium saucepan, combine the vinegar, water, apricots, sugar, shallot and garlic and bring to a boil. Simmer over moderate heat, stirring occasionally, until the apricots are soft and coated in a light syrup, 7 to 10 minutes. Stir in both mustards and season with salt. Let cool completely. Stir in tablespoons of water before serving if the mostarda is too thick.