Will jam freeze in unheated house?

Yes, jam can freeze in an unheated house if the temperatures drop below the freezing point of water, which is 32°F (0°C). Since jam contains a high sugar content, it may freeze at a slightly lower temperature, but prolonged exposure to cold conditions can still lead to freezing. If the temperature is consistently below freezing, it's advisable to store jam in a heated area to maintain its ideal texture and quality.