You c ould also try mango smoothies (use frozen mango cheeks if they aren't in season), or tinned peaches (in natural juice - no added sugar). I also put in a bit of Petit Miam For Baby vanilla yoghurt but you could use normal yoghurt too. I have even been known to use jars of pureed baby fruit when I have run out of suitable fresh fruit.
Hope your little darling gets better soon!