Feta cheese is a brined curd and is packaged and sold in blocks. The crumbly bright coloured cheese is made of a mixture of sheep and goat's milk. It is one of the 'good fats' as it is low in calories with a good source of protein containing probiotics that do wonders to your gut compared to other cheese. Hence, it is suitable for people who are slightly allergic to dairy, and people who like eating clean.