Located in the heart of the hipster Malasaña neighborhood, beautifully decorated, there is a cozy gourmet store specialized in imported Mediterranean products, from Greece, Italy, Russia and Armenia called Greek & Shop.
But the great thing about Greek & Shop, besides all the products that you can only buy there, is their delicious food. You can have it inside on their wooden tables or take it away (this is perfect especially on Fridays and Saturdays when they open all day and night long).
They have a huge variety of pitas and sandwiches from € 3.5, or focaccias and wraps from € 2.50, where the feta cheese is always the main ingredient. They also have salads, Greek pies, and some Mediterranean specialities like Mousaka, Dolmadakia or Kotopoulo. You also can find the most original combinations I’ve seen in their “Tostas” (bread toasts): feta cream cheese, salmon, orange, walnuts and balsamic vinegar; eggplant, plums, mozzarella and oregano; or herring, Kefalotiri cheese, and tomato, are just some of them.
In my opinion, the best choice is to pick a menu (Pita / Sandwich / Complete) and if you are feeling very hungry go for the Greek yoghurt with honey and nuts as dessert, it never disappoints.
If you are a fan of Greek food also check Dionisos, the new chain of Greek restaurants in Madrid.