The meat on the left is Tafelspitz for which my dictionary only gives a translation of prime beef boiled. This you can find everywhere in eastern Austria. But the more important part is the pumpkin stew here as a side dish which makes a good main meal by itself. This style of Styrian Pumpkin I love and it was cooked for me by my mother on 45th birthday.
I didn't have the chance to ask her for a detailed recipe, so for the time being take this one