A ubiquitous blended whisky. It's inexpensive, fairly neutral and, as one person (perhaps it was @Victor) put it, a "universal solvent". Grant's Family Reserve is inexpensive and does exactly what you think: it's useful for making an Old Fashioned, a Rusty Nail, a Godfather, a Rob Roy or whatever else you fancy. It's also decent-ish for sipping neat or with a bit of water.
The nose was a little off-putting at first. There was a strong nail-polish remover (acetone?) component that had to be left to calm down. I didn't think blended whisky needed to sit and "open up" as much as malt whisky, but it appears I was wrong. After 10-15 minutes, the nose was fairly straightforward: dried fruit (raisins and prunes mostly), toffee and cereal.
In the mouth, Grant's was ok. Nothing fantastic, but a budget blend rarely blows you away. Sherry-type notes were present, a little vanilla, not much else.
The finish was more of the same with a young grain whisky (cereal-ish?) ending.
Grant's Family Reserve met my expectations for a budget blended whisky.