US burger chain Steak 'n Shake has rebranded itself around Donald Trump's "Make America Healthy Again" (MAHA) agenda, ditching seed oils and microwaves in favour of beef tallow, cane sugar and traditional cooking methods. The move, championed by owner Sardar Biglari and a newly created "Chief MAHA Officer", has coincided with a sharp rise in sales, positioning the chain as a commercial test case for whether courting Trump-aligned health politics can pay off for a mainstream fast-food brand.

The chain introduced 100% grass-fed beef burgers in June and now uses 100% beef tallow fries, cane sugar Coca-Cola, Wisconsin butter and A2 whole milk, while removing microwaves from locations across several US states. Biglari told shareholders 2025's performance was "the biggest story of the year", citing a 13% rise in same-store sales, following 10.7% growth the year before. The rebrand has drawn public backing from MAGA-aligned figures including Marjorie Taylor Greene, Elon Musk and Lara Trump, and prompted a Tesla partnership to install superchargers at over 100 of its locations.