As I recall, esargot are served in the shell, and they are hot, having been cooked in seasoned broth. You pick the whole shell up with the holders, and then you use a tiny fork to wiggle the snail from the shell. And then you dip it in garlic butter. Sometimes they are served de-shelled, with garlic butter. I like them. But probably it's the garlic butter.
Yeah, I imagine most things would taste good with garlic butter. I wish I'd had opportunity to try esgargot before I stopped eating meat. Sounds like a lot of work for a small reward though!