If you can't find the Beyaz Peynir you're looking for, you can often substitute other cheeses. You should carefully consider how you plan to use the cheese. If you're sprinkling it atop a salad or using it in a wrap or pita pocket, you might use feta cheese in place of Beyaz Peynir. For a pastry filling, ricotta is a similar substitute, though it has a sweeter flavor. Paneer slices well and has a similar taste to Beyaz Peynir.