Coffee brewing. Both pour over and classical barista world championships are possible once you win your nationals. I know someone who came 2nd in higly competit

Coffee brewing. Both pour over and classical barista world championships are possible once you win your nationals. I know someone who came 2nd in higly competitive nationals in my country and the person has a different full time job. It is a very deep skill with a lot of science behind it, if you wish, and not fully explored yet.