03Raise the heat to medium-low, and stir in the brown sugar and vinegar. Cover and simmer for 30 minutes. Add the raisins and simmer uncovered, stirring frequently, until the mixture is thick, about 15 minutes. Season to taste with salt and pepper.04Ladle into a glass jar or other storage container and allow to cool until no longer steaming. Cover and refrigerate for up to 2 weeks. The chutney tastes best at room temperature.