If a plum pit accidentally got blended up and mixed into your cake batter, it is unlikely to pose any immediate danger. Plum pits, like many fruit pits, contain a hard outer shell that is difficult to blend completely. However, it's important to exercise caution and take appropriate steps. Here's what you can consider:
Check for large pieces: Once you discover that a plum pit got blended into the batter, carefully inspect the batter for any large pieces. If you notice any sizable fragments of the pit, remove them to prevent potential hazards while eating the cake.
Small fragments: If the pit was blended into very small fragments, they are unlikely to cause harm. The small pieces are typically not sharp enough to cause injuries or pose a choking hazard. However, if you have concerns or if anyone consuming the cake has specific health conditions, it may be best to err on the side of caution and discard the batter.
Serve with caution: If you decide to bake the cake with the blended plum pit, it would be wise to inform those who will be consuming the cake about the presence of the pit. This allows them to be aware and exercise caution while eating.
While accidental inclusion of a plum pit in the cake batter is not ideal, the risk of immediate danger or harm is generally low. However, it's always a good idea to prioritize safety and consider individual circumstances when making decisions about consuming food with potential foreign objects.