Ocasio-Cortez later posted an Instagram video of her drinking her first can of Irn-Bru in a “moment of truth”.
She said: “Oh my God, love it, love it.
“This tastes just like Kola Champagne.”
She added in a comment: “I was so shocked at having something in Glasgow that tasted like home.
“However Irn-Bru is also very unique on its own.
“It’s got pizzaz. I like it!”
On Tuesday, the congresswoman spoke at a press conference at the climate summit and also attended an event on gender and the climate crisis at which the Speaker of the House of Representatives, Nancy Pelosi, made a speech.
A spokesperson for Irn-Bru said: “It’s phenomenal that Scotland’s ginger nectar has made such a splash with delegates from across the globe.”