Press or mince garlic and mix together with oregano, thyme, lemon zest, salt and olive oil to make a marinade.
Cut meat into cubes of equal size and let marinade for a minimum of 30 minutes.
Peel onions, cut them in half and separate the individual layers. Remove the pepperoni from the glass jar and cut off the stems.
Now thread one piece each meat, onion, pepperoni, meat, onion, pepperoni, meat onto each skewer. There should be enough for eight shashlik skewers.
Tzatziki
Coarsely grate cucumber.
Press or mince the garlic and mix together with the yoghurt, salt and pepper.
Pita bread
Mix together all ingredients and knead into a smooth dough. Divide into four equal portions.
Using rolling pin, roll each portion into a flat circle. Without using additional oil, heat a pan on the stove and toast on both sides. The bread should be very dark in spots.
Serving
Skewers:
Place the completed skewers on the grill and cook on all sides.
Generously dollop tzatziki on the pita bread and lay the grilled skewers on top.
Slice lemons into quarters and serve with the gyros. Strips of chopped cos lettuce can be also be served on the tzatziki