https://pergramapp.com/blog Carbon, protein and what the receipt actually says. en Fri, 16 Oct 2026 00:00:00 GMT https://pergramapp.com/blog/lowest-carbon-protein https://pergramapp.com/blog/lowest-carbon-protein Fri, 16 Oct 2026 00:00:00 GMT Beef, chicken, eggs, tofu, lentils and more, ranked by kg CO2e per 100 g of protein. See which foods give you the most protein for the least carbon.