GcMAF yogurt is a homemade fermented product created by culturing high-quality milk with specific probiotic strains believed to support immune function. The process typically involves heating milk, cooling it to a safe fermentation temperature, adding a specialized probiotic starter, and incubating it for 24–48 hours until thick and tangy. While some claim GcMAF yogurt offers health benefits, it’s important to follow proper hygiene, use reputable probiotic sources, and consult a healthcare professional before use.