1. In a medium saucepan over medium heat, combine cranberries, vinegar, water, sugar, mustard seeds, ginger, cloves, salt, pepper, and lemon peel. Bring to a simmer, and then add pears.
2. Cook stirring occasionally, until pears are tender, about 15 to 20 minutes.
3. Remove lemon peel. Pour mostarda into (16-oz.) storage container. Serve mostarda warm, at room temperature, or cold.
Source: Hannaford fresh Magazine, September - October 2008