L.C.
When my daughter did this it wasn't because she liked to spit food, it was because she was pretty much in love with spitting altogether. Raspberries were her thing, man! She probably wont even totally get what you are getting on to her for. So I would distract her while you are giving her the bite. If you are singing to her or blowing bubbles (I know it all sounds silly but the goal is to walk away free of baby food, right?)is thinking of something other than spitting. She really isn't trying to spit on you. I promise. She just loves the great new thing she can do with her mouth. ANd believe it or not manipulating her mouth in different ways - even spitting - is pre-speech exercise for her.