We are finally coming over from Manhattan for the first time to check out some Brooklyn neighborhoods this weekend (Park Slope vicinity). We want to treat our friend/tour guide to lunch, any ideas? We initially thought Peter Luger's but I think that will be too expensive a proposition. Would prefer lunch to typical eggs-brunch food. Also, my boyfriend will not go anywhere crowded or with a wait, so I know this probably excludes a lot. Any ideas? thanks!