Thanks so much for your responses.
Rachaelmae- I haven't tried cows milk yet. I add formula to everything to get the extra vitamins and iron. I may try some and see if it causes a problem.
Kate - isn't it strange how they have funny reactions to some foods only, and i'm so glad to hear that mine isn't the only one! I figure that following my hv's advice will result in a three month wait to see a paediatrician to be, more or less, told what you have just told me. The AK Purees book has a lovely recipe for rice pudding so i'll make a batch of that. She'll love it. Good to hear she'll grow out of it......probably around the same time that she will refuse to eat anything except chips and beans!
Cath