I’d say it’s probably more common they use mixes than they create from scratch from the limited experience and talks I’ve had with bakers on the subject.

The professional part are the modifications, frosting, and decoration. Hard to beat the premade mixes for a base though.

Slightly off topic, but I’m loving comparing all these sub discussions to programming.

The issues of boxes changing and dependency management, and this thread is rough analogy to coders who just glue prepackaged stuff together or overuse of packages.

I don’t know if there’s any real takeaway but I had never thought of programming problems in this way — things always felt a bit more abstract than cooking is.