Is tea a countable or uncountable noun?

Answer 1

The 'tea' is a common, concrete noun, a word for a plant or a beverage, a thing.

The noun 'tea' is an uncountable noun as a word for a substance use to make a beverage and as a word for the beverage made from that substance.

The noun 'tea' is a countable noun as a word for 'types of' or 'kinds of' tea.

Example: The teas on the menu were green tea, black tea, and white tea.

Answer 2

The noun 'tea' is an uncountablenoun as a word for a substance. Units of tea are expressed as a pot of tea, a cup of tea, a package of tea, etc.

The plural form 'teas' is reserved for 'types of' or 'kinds of'; for example:

The teas on the menu are green tea, jasmine tea, and lemon grass tea.