IF the cup of tea was made with boiling water, it will, in theory, freeze faster than the cup of water.
Why? Because heating drives out any air bubbles that can slow down the freezing process.
Ice formed at high pressure has a different crystal structure and density from ordinary ice.
Rime is a type of ice formed on cold objects when drops of water crystallize on them, and can be observed in foggy weather, when the temperature drops during the night.