How do I ask for oat milk in English?
Say the milk directly after the drink: A latte with oat milk, please. The shorter form Oat milk, please. works as an answer to the barista's question, and Can I get that with oat milk? is the polite version when you are changing an order you have already given.
Say the milk directly after the drink: A latte with oat milk, please. The shorter form Oat milk, please. works as an answer to the barista's question, and Can I get that with oat milk? is the polite version when you are changing an order you have already given. Oat milk is the standard term in the UK, the US and Australia; some European cartons say oat drink, but baristas understand oat milk.
Two practical notes. Many cafes use a barista-style oat milk that froths and tastes sweeter than the carton at home, so if you drink your coffee unsweetened, ask whether the oat milk is sweetened. And if the cafe has run out, the question that gets a usable answer is which plant milks they have today, because soy and coconut behave very differently in a latte.