Blue Bottle Coffee has switched its default milk back to whole milk in its app and cafes, reversing an earlier move that made oat milk the default to cut carbon emissions. The company says customer preferences shifted and that asking guests 'whole or oat?' reduces remade drinks. Oat milk remains available at no extra charge. The original default was part of Blue Bottle's carbon reduction push. The reversal highlights a common problem for climate focused businesses: sustainability choices that depend on defaults can be reversed when customer behavior pushes back. The net impact on emissions will depend on whether oat milk orders stay high without the default nudge, and whether fewer remakes offset any shift toward dairy. For anyone tracking corporate climate commitments, this is a concrete example of how quickly a headline-friendly policy can change. It also shows why companies should publish the actual emissions data behind menu decisions, not just the initial press release.
