1. First combined the yeast and sugar in a small bowl, Add the water while gently whisking the yeast and sugar. Let this mixture sit while you mix the rest of the ingredients. If your yeast is good then bubbles and foam should form on the top. (By the way, this step is what is commonly referred to as "proofing the yeast")
2. Combine the flour mix, xanthan gum and salt in a large mixing bowl and stir well. If you have a sifter, then by all means sift the flour. I don't, so I whisk and stir it really well.
3. In a third bowl, whisk the eggs, oil and vinegar until the eggs are a bit frothy.
4. By this point the yeast mixture should be foamy, so you can pour the two liquid mixtures into the flour mixture. Stir until all ingredients are well mixed and then
(a) dump the dough into your bread machine and bake on the 80 minute setting.
(b) or following the remaining instructions for a convention oven.
5. Grease a loaf pan. A 1 Pound Loaf Pan measures 8.5? x 4.5?, with shortening, butter, or the appropriately allergen-free substance. Scoop the dough into the pan and smooth it out with a rubber spatula or the back of a spoon. Cover the pan with a damp dishrag and place in warm area so that the dough can rise for the next 45 - 60 minutes. The dough should double in size or reach the top of the pan.
6. After the dough has risen, bake in in a 375 degree oven for 60 minutes. When the bread is done it will have a crisp brown crust and it will pull away from the sides of the pan. Remove the pan from the oven, and the bread from the pan, and cool for 15 minutes before slicing.