I love Greek food. It always makes me think of summer. This is the taste of a souvlaki in a burger with the added bonus of a feta filling to increase the Greek influence.
Entirely up to you what to serve with the burgers but I think they would be great with some tzatziki, flavoured flatbread, and a Greek salad.
I have used minced pork in the recipe but substitute minced chicken, minced lamb or even minced turkey if you want. Beef is too strong for this recipe and, to my mind, is not a particularly Greek flavour.