the.com/mixologist

means Someone who makes cocktails with enough technique and theatrics that 'bartender' no longer covers it.

from Built from 'mix' plus the pseudo-scientific suffix '-ologist,' the word surfaces in the 1800s as a jokey, mock-serious title for a skilled drink-maker — the suffix borrowed from real sciences like biology or geology to make shaking a cocktail sound like a discipline worthy of a degree. It faded, then roared back in the late 20th century as cocktail culture got serious again, this time with less winking and more actual expertise behind the bar.