a slightly sour, thick liquid made from milk with bacteria added to it, sometimes eaten plain and sometimes with sugar, fruit, etc. added

natural/plain yogurt 天然／纯酸奶

strawberry yogurt 草莓酸奶

low-fat yogurt 低脂酸奶

I only had a yogurt (= a container of this) for lunch. 我午餐只喝了一罐酸奶。

I settled for orange juice, yoghurt, and black coffee for breakfast.

They eat no animal products at all – no milk, cheese, eggs, yoghourt, etc.