Sainsbury's drops brown eggs for white eggs to cut carbon footprint by 12.7%

Sainsbury's is phasing out brown eggs from its own-brand lines and replacing them with white eggs. The retailer says white eggs have a 12.7% lower carbon footprint because white hens eat less feed, live longer, and lay eggs for a longer period. The move is part of the supermarket's long-term sustainability goals for the UK food system. White eggs are already common in restaurants but rarely seen on UK supermarket shelves. Sainsbury's says the switch does not affect taste, quality, or nutrition. The change also improves animal welfare since white hens are less prone to feather pecking. Other UK supermarkets have tested white eggs during supply shortages, but this is the first major permanent shift by a large retailer.