Your bread doesn’t need to double in size – it just needs to grow by at least 50%! However, if it doesn’t grow at all, this could be due to various factors: Issue 1: The dough needs to be placed in a WARM place. If you're in a cold climate, reposition the dough near a heater or in the oven with the light on. Issue 2: Ingredient substitutions will 100% affect whether the dough rises. For example, heavier ingredients like spelt flour and olive oil will make it more difficult for it to rise.