Questions & Answers about Die biefstuk is sappig.
Yes. Die is the Afrikaans definite article, so here it means the.
A useful thing to know is that Afrikaans does not change die for gender the way some other languages do. It is used for:
- singular nouns: die biefstuk
- plural nouns: die biefstukke
So in this sentence, die simply marks biefstuk as a specific steak.