Veganbaking.net - The Hows and Whys of Vegan Baking
Veganbaking.net - The Hows and Whys of Vegan Baking
  
Yeast leavened dough should not dry out during rising. To prevent this either cover it with a damp towel or coat it in oil and cover with a plastic bag. In extremely hot kitchens, the oil and plastic bag method is the most effective. Just don't forget to remove it before you put it in the oven!