。
My brother and I have the same taste in food.
Literal
I [and-と] younger-brother [topic-は] food [of-の] preference [subject-が] same-together is.
一緒 ('together, same') is a broad word: 'physically together,' 'identical,' 'united.' Here it means 'the same.' 好み ('preference, taste') is the noun form of 好む ('to prefer'). 食物 is a slightly formal word for 'food' — 食べ物 is the more common casual form. Polite です makes it slightly formal.