A healthier twist on sourdough, made with whole wheat flour for a hearty texture and earthy flavor. Storange Instructions: To keep the bread fresh, wrap it in an airtight container and refrigerate for up to 5 days. For longer-term storage, it's best to immediately portion and freeze. Reheating Instructions: Oven Toaster/Convection Oven: Preheat the oven to 150°C. Toast for 3 minutes.