Mediterranean Lamb Burgers

To make the burgers you place the ground lamb and beef in to a bowl with the mint, ginger root, garlic, salt and pepper and stir together until just about combined.
Now divide the mixture up into four portions then shape them into four patties.
Set them aside.
It is best if you cover them up and place in the refrigerator until you are ready to cook them.
After making the burgers you are now ready to make the sauce.
To do this place the yogurt, lemon zest, garlic and salt into a bowl and mix well.
Place the mixture, which you have covered over, into the refrigerator until it is needed.
When it comes to cooking the lamb the barbecue should be at a medium heat and will need to be cooked on both sides for between 3 and 4 minutes each.
The best way to test to see if they are cooked through is to insert a meat thermometer and see if the temperature inside them has reached 160 degrees Fahrenheit.
Once the burgers are ready you need to prepare the buns in which the burgers will be served.
The first thing you should do is place a slice of onion and tomato on the grill and cook them until they are lightly charred on each side.
Then spread some of the yogurt sauce over the burger or ciabatta roll and then place the burger on top of this.
Then place on top of this the onion and tomato slices before some leaves of lettuce.
Then top it all off with some slices of feta cheese and the top part of the roll.