Of course, it is a German thing. I think this is ‘Mile End coming soon’.
If you want to find out what meat they use, you have to click on the Location tab, which gives a choice of UK, UAE, Qatar, Oman, Egypt, Sweden and Bahrain.
For the UK, you get Chicken, Beef or Mix. In Germany it was virtually always Turkey, sometimes beef if you were lucky.
Where’s the lamb? I think it’s because Germans don’t like it.