It’s Independence Day so … grills just wanna have fun. No doubt that a fair amount of seared steer, flamed fish and fowl, and “Q’d” pork — not to say all manner of burgers, dogs, vegetables and even fruits or breads — will scent the air this weekend. There’s not much that we don’t like cooking over flame, come the months of summer — and why is that? It’s quick and cool, for one; when meat meets heat outdoors, that’s just sane on a sweltering day.