I made this again the other day as my kids have had the flu and I had 600g of chicken defrosted. Against my better judgement (I prefer making chicken and Vegie soup) my kids prefer this one and as they were sick I wanted to get them to eat something! I have to say that in the past I have used the 250g chicken as stated in the recipe and never had a problem- also, omitting the parmesan but this time I bunged the whole 600g in - I don't know if it was me being distracted by sick kids all the time but with the larger quantity of chicken meat it turned out almost like a mousse- very thick and you could have probably eaten it with a fork instead of a spoon. It was still tasty, but rather than getting rid of it I transferred the whole lot into a large stockpot and had to thin it down with chicken stock but even so I still won't be doing that again. Luckily my kids ate it but by then I probably had 3 litres of soup to deal with and they were only eating a small bowl each. By the end I didn't even add the egg yoks either as it was far too thick anyway. Live and learn!