I also have never heard of that, but know that some rice cereals do have milk in them. Like Natalie said there is new research showing that grains are not the best to start with. Like Laura, we started with banannas and advacodos.
Are you wanting to start solids hoping it will make things stay down better? In our case that didn’t really work. As a matter of fact it made things worse. Luke would gag and throw up carrots and green beans and whatever else you feed him. Looking back I should have just stopped and waited. I thought it would help and also thought I was supposed to start solids at 6 months. Silly, I know , but I had no idea I could just wait. 