why is chicken meat for basar bchalav

rabbi, a chicken and milk question. the torah says “do not cook a kid in its mother’s milk,” and the shulchan aruch (yoreh deah 87) says chicken with milk is only derabanan and fish is not forbidden at all. why did the rabbanim extend the issur to...

Whey protein

Hello Rabbi, Given that whey protein isolate does not seem to have any milk flavor, can it be considered pareve for the purpose of consuming after eating meat?