If we look at Act I scene 5 carefully, we can see Lady Macbeth's response to hearing about the prophecy of the witches and her concerns about what might prevent Macbeth from gaining the crown that the witches have promised him. The answer to your question can be found in the soliloquy that Lady Macbeth gives:
Many cheeses today were first recorded in the late Middle Ages or afterâ cheeses like Cheddar around 1500 CE, Parmesan in 1597, Gouda in 1697, and Camembert in 1791, but there is no way to judge what recognizable relation to modern products the cheeses made in those locations bore.
Feta cheese is one of the oldest cheeses in the world and is said to be a product from Greece. Since October 2002 feta cheese has been formally accepted as a Greek only cheese Feta is soft cheese, and is made from sheep milk if a mixture of sheep and goat milk. More recently cow's milk has been used. Feta is white in color, is a bit sour to the taste and rich in aroma.