OK, I've not been to Germany, so I can't say how "genuine" the food is at the Wurst Haus, by my lord isn't it ever so tasty! We've had breakfast here on more than one occasion and not only are they very reasonablly priced (a rarity in the Barossa) but the smallgoods used are delicious, the coffee is nice and the deserts! Oh, that cake display! The strudel is delicious and well worth a try.
It's just a little bakery with a few tables and chairs, both inside and outside, humble sure, but put that aside and enjoy a very pleasant meal. The deli seems small but very well stocked.