In America we say café au lait. We got that from the French who also say this. The Spanish say café con leche; the Portuguese say café com leite. In Poland they say ‘white coffee’ or kawa biała. In Germany it is Milchkaffee meaning ‘milk coffee’. The outliers here are the Dutch who call the innocent mixing of coffee and milk koffie verkeerd, or ‘wrong coffee’. Perhaps this bias against adding milk to coffee comes from their tradition of not adding milk to tea either. Who knows?