Fill your steamer with water and start to heat it up (you will be steaming these on high so be careful of the steam).
Mix all the ingredients together and pour them into a muffin tray. The vinegar is to help the rice flour expand. It won't smell of vinegar at all after you've cooked your buns.
Place the tray in the steamer once the water is boiling (this is the trick). Steam for 10-15 minutes over high heat. When the top of the buns open up (like a flower blooming), it's ready.
In the picture you see, I added sweet potatoes! You can add in beans or grated carrots too. This is only slightly sweet so add more if you want.
Story Behind this Recipe
I made this because my daughter is allergic to wheat flour. There is no way to fail at making these simple fluffy buns.
Depending on the fineness of the flour, the amount of water needed will be necessary too. So use a smaller amount at first and then add more if necessary. You can also use rice flour powder mix and it will turn out great. The other day I just happened to have rice flour designed for baking and it turned out fantastic.