When is it safe to make baby food?

My daughter is 5 months old, and is on 2 solid meals a day (in addition to her regular formula bottles), which she loves and gobbles down with glee. I currently feed her special organic food (no additives), but I'd love to make my own flavors for her. My husband is set against this, though, and believes that she will surely get gastroenteritis from food that I make. She is a healthy girl, and I currently sterilize everything I can that comes in contact with her food. At what point is it safe to make your own baby food? I umed now, but my husband (who is a doctor) was so set against it that he threw out my entire pot full of sweet potato/squash/carrot/pear puree that I had made tonight for her (and for which I am rather angry at him). I know he's trying to protect her, but I think that's a bit insane- or am I wrong?