Don't use: [skillet], [knife-care], [spatula-technique]. (Note that some of these tags are fine, but should be used for other kinds of questions, like selection or maintenance)
Eliminate the [technique] and [cooking-techniques] tags.
This one may be controversial, but after first posting about this several days ago, I still don't see them being particularly useful. Remember that the primary purpose of tags is to make it easy for people to find questions they can answer. The aforementioned tags are too general to be of any use in that.
What's more, the tags were used heavily in the private beta when there were very few questions, but now that real sub-areas are starting to emerge, people are using them less frequently. I think that if the community naturally starts to lean away from a particularly vague tag in favour of more specific tags, that's a good sign that the tag is... too vague.
I am not married to this system (I've tried to pick one that seems consistent with the way most of the community is already doing it), and if somebody has a better one then feel free to contribute. The important thing is that we're consistent!