Recipe for making homemade blue cheese that is made using curds from farmer's cheese and a just a teaspoon of Saga blue cheese to use as the inoculum.
This recipe uses Avocado oil imported from New Zealand. from Elysian Isle Avocado Oils in Oregon.
Recipe for Bulgarian Feta Cheese can use goat or cow's milk.
Quark is similar to sour cream. You can make your own using purchased buttermilk.
From the message board of CountryLife.net here are two methods for making your own sour cream at home.