I was facing that problem couple of months back, baby just refuses to eat! I think he finds cooked rice porridge too bland as we never put any salt or seasoning. He was too used to the rich flavours and taste of instant cereal + formula + puree combi. So we cracked our head and finally came up with a solution, that is to make vegetable stocks and cook porridge with it! And soon after that, my baby is more "accepting" of cooked porridge and now he can down one whole bowl in no time! 
So, you should all know by now that my porridge making process is a bit more leceh than the rest of you. My baby's a fussy eater!
This is a brief "rundown" of "events"
1.) cook vegetable stocks in slow cooker (for 3 days' meal). Ingredients are corn on cob (jagung) + carrots. Sometimes will also add fish bones if we can find.
2.) Use the vege stocks to cook porridge (instead of water) - Organic millet + organic quinoa + organic brown rice. Also add in one chunk of pork to make it sweeter.
3.) make puree - either sweet potato or pumpkin (must have one of these, otherwise not sweet enough, baby might not like). Sometimes will add on brocolli. all these are to be added to the cooked porridge.
4.) Another must have - FISH. Steam either Cod or Threadfin then puree it. add to the porridge and stir once it's done.
I believe all of us has our own method of making baby's food. So please share yours
