You don't need sugar, You need carbohydrates, which are supplied in the flour. 4 ingredients are required, Flour, Water, Yeast and Salt. (though, in a pinch, yo

You don't need sugar, You need carbohydrates, which are supplied in the flour. 4 ingredients are required, Flour, Water, Yeast and Salt. (though, in a pinch, you can do without salt, but it works as something of a regulator to the speed of the yeast and it affects the texture of the dough. (And you can do it without the yeast. but then it's sourdough. (Water and flour though, I'm pretty sure those are really required))) Fat isn't required either, but in some doughs, it can help with the workability or flavor. Try this: Mix yeast and a batch sized quantity of water. Nothing really happens, but the yeast (depending on the type you've added) will dissolve or break apart. Add some flour, about what you'd add in sugar. Mix it so that the flour is not in clumps. If the water temperature is reasonable, the yeast will start to break down the carbohydrate in the flour into sugar, consume it, and start bubbling. Then add it to bread, as the yeast has been proofed. Some yeasts don't require the proofing step (SAF red for one). It's perfectly fine to add to the dry ingredients. I like that stuff, super reliable and easy to use but despite being french, I've never seen it outside the states. Some yeasts are better for sweet breads (like panettone, cinnamon rolls, or others). Some yeasts come in little sachets just suck and are hard to work with, like the stuff I had in the cupboard pre-pandemic.