My daughter is 6months and 2 weeks and I've been giving her puréed fruit and vegetables and attempted to purée the odd bit of minced beef or chicken in a meal with tomato or sweet potato for her but can't seem to get the meat totally smooth. She spits the lumpy meat bits out but it dosent seem to make any difference how long it's left in the blender for it still comes out with tiny lumps. What is the trick to getting smooth meaty meals please?