In a large mixing bowl, dissolve 1 Tbsp sugar in the lukewarm water. Then sprinkle the yeast on top. Let sit covered for 15 minutes.
Beat, then add the eggs, melted butter, vinegar and 1 Tbsp Sugar. Mix until well combined. Stir in the rice flour, potato starch, corn starch, baking powder and xantan gum. Mix until well combined. Place the dough into a lightly greased bread pan. Let rise in a warm place for 30 minutes or until it has risen to the top of the pan.
Pre heat oven to 375 F.
Bake for approximately 35 minutes.
Recipe by Officially Gluten Free at https://www.officiallyglutenfree.com/?p=4246