Leite de aveia vs. bebida de aveia
The terms leite de aveia and bebida de aveia refer to the exact same plant-based liquid. The main difference lies in the context of usage: one is the colloquial term used in daily speech, while the other is the legal term required on commercial packaging to distinguish it from dairy products.
Leite de aveia
A2This translates to "oat milk". It is the most common term used in everyday conversation, recipes, and at coffee shops. Although almost everyone says leite de aveia, it is technically incorrect for labeling in many regions (like the EU) because laws often reserve the word "milk" for animal secretions.
Você prefere café com leite de vaca ou leite de aveia?
(Do you prefer coffee with cow's milk or oat milk?)
Eu faço o meu próprio leite de aveia em casa.
(I make my own oat milk at home.)
O leite de aveia deixa a vitamina mais cremosa.
(Oat milk makes the smoothie creamier.)
Por favor, me dê um copo de leite de aveia.
(Please give me a glass of oat milk.)
Bebida de aveia
B1This translates to "oat drink" or "oat beverage". You will primarily see this term written on cartons and bottles in the supermarket to comply with food labeling regulations. While it is the official commercial name, people rarely use bebida de aveia in casual speech.
A embalagem diz bebida de aveia enriquecida com cálcio.
(The package says calcium-fortified oat drink.)
Esta marca de bebida de aveia é muito popular.
(This brand of oat drink is very popular.)
Os supermercados vendem bebida de aveia na seção de produtos naturais.
(Supermarkets sell oat drink in the natural products section.)
Verifique os ingredientes desta bebida de aveia.
(Check the ingredients of this oat drink.)
Summary
In short, use leite de aveia when you are speaking to friends, ordering coffee, or cooking. Look for bebida de aveia when you are shopping at the grocery store and reading labels.