INSTRUCTIONS
1. Place the peppercorns on a work surface and crush them coarsely by firmly pressing and rolling the bottom of a heavy fry pan or saucepan over them.
2. In a nonaluminum saucepan over high heat, combine the crushed peppercorns, vinegar, water, sugar, salt and pepper flakes. Bring to a boil, stirring once or twice. Remove from the heat and let stand, uncovered, for at least 1 hour before using to allow the flavors to blend. For longer storage, let cool completely, then transfer to a nonaluminum container, cover tightly and refrigerate for up to 1 week.