Nicki Minaj at Steakhouse -- Bring Me Some A.1. Sauce, STAT!!!

Nicki Minaj committed the ULTIMATE steakhouse sin at Boa last night ... she sent someone out to get her A.1. Steak Sauce right in the middle of her meal ... and TMZ has the video proof!!! FYI -- most chefs working at top steak joints across the…

Tyra Banks Uma Thurman Vanessa Hudgens Vanessa Marcil