I've recently started tasting my beers throughout the various stages of fermentation and have been wondering about the idea of adding additional steeped grain to the beer after primary fermentation has slowed if the flavour isn't quite what I was aiming for. My thinking is that if all (or the majority) of the sugars from steeped crystal malt are unfermentable then it shouldn't matter when they are added.
Has anyone tried this before or does anyone have any other thoughts on this technique?