Should the word coffee be capitalized in sentence?

No, the word "coffee" is not capitalized in a sentence unless it is the first word of the sentence or part of a proper noun.

Here are some examples:

* Correct: I love to drink coffee in the morning.

* Correct: I went to Starbucks for a cup of coffee.

* Correct: The Coffee Bean & Tea Leaf is my favorite coffee shop.

Incorrect: I love to drink Coffee in the morning.

Incorrect: The Coffee Bean and Tea Leaf is my favorite coffee shop.