- Keep refrigerated.
- Freeze in airtight container and leave at least 1/2 inch headspace at the top, as buttermilk will expand when frozen.
- Frozen buttermilk will have a slightly different taste and texture when thawed and is best used in cooked dishes.
- Freezer time shown is for best quality only— foods kept constantly frozen at 0° F will keep safe indefinitely.
Sources: For details about data sources used for food storage information, please click here