Sperical lumps in milk Got to work this morning and made the first round of drinks and everything was fine with them. We then made the second round about an hour later with the same milk, same kettle, same instant coffee and tea bags. It all tasted fine but in the bottom of some of the cups after we had finished were some spherical white lumps.

This happened in both the coffee and the tea so it appears it was caused from the milk. What are these lumps?
I would suspect that these lumps are milk protein coagulating, sometimes these little lumps are unavoidable. I also suspect that this means your milk was 'on the verge or going,' and I would suggest that you either use a pure silver pitcher to keep your milk from growing bacteria or you can drop a pure silver item into your milk. Silver will prevent bacteria from multiplying(silver works especially well if you are going to leave your milk at room temperature for any period of time.) Good Luck