Is cold tea a good indicator?

"Cold tea" as an indicator is a bit vague. To answer your question, I need more context! What are you trying to indicate?

Here are some possibilities and how "cold tea" might be relevant:

* Time: Cold tea could indicate that a beverage has been sitting out for a while, potentially for too long. This is relevant if you're trying to determine the freshness of food or drinks, especially if there's a risk of spoilage.

* Temperature: Cold tea is an obvious indicator of a low temperature, which could be relevant in scenarios involving temperature control or monitoring.

* Social cues: In some cultures, cold tea might be a signal of hospitality or politeness. For example, offering a guest a cup of cold tea could be seen as a gesture of welcoming them into your home.

* Metaphor: "Cold tea" could be a metaphor for something that has lost its freshness, excitement, or relevance. For example, someone might say "This project feels like cold tea" to express that they've lost interest in it.

Please provide more information about what you're trying to indicate.

For example:

* "Is cold tea a good indicator of how long someone has been away?"

* "Is cold tea a good indicator of the quality of a restaurant?"

Once I have more context, I can provide a more helpful answer!