I have a mystery herb in my garden (inherited from previous owners).

It has a minty scent, but mostly I smell lemon or citrus.

The leaves have a slight fuzz and seem to be getting quite large (the plant itself is up to about 18 inches already).

I would like to assume its mint and make tea or use for recipes, but would prefer to confirm before I end up eating catnip or some other odd plant!

Can anyone help or suggest a resource?