For decades, Lumilagro rode to prosperity on the popularity of its signature steel or glass thermoses Argentines use to carry hot water to make mate, the locally ubiquitous herbal tea.

Argentine President Javier Milei took to the stage Monday night in Buenos Aires for a book launch-turned-rock concert, a move that delighted his fans but drew criticism from opposition members who accused him of being out of touch with the country’s economic problems.