cut one's teeth on
idiomPart oftooth
cut one's teeth on — idiom
1. to gain your first experience or training in a particular area or skill by doing
1.idiom
Definition
to gain your first experience or training in a particular area or skill by doing something specific.
Example
The young chef cut his teeth on simple dishes at a small restaurant before opening his own place.
Imran cut his teeth on programming video games as a teenager, which led to a career in software.