1. Line a 9x5 inch loaf pan with plastic wrap. Combine blueberries, condensed milk, buttermilk, and lemon juice in a food processor and puree until smooth, about 2 minutes, scraping down sides of bowl as needed.
2. Strain mixture to remove blueberry skins and transfer to prepared loaf pan, cover with plastic wrap, and freeze until firm, about 7 hours.
Source: Hannaford fresh Magazine, July - August, 2017