The garlicky sauce in this dish is almost as delicious as the escargots themselves; it's hard to think of a better use for crusty bread than sopping up this luxurious "snail butter." But the main event is the escargots' tender texture and clean, woodsy flavor.
Put oven rack in middle position and preheat oven to 450°F.
Using a heavy knife, mince and mash garlic to a paste with 1/8 teaspoon table salt.
Beat together butter, shallot, garlic paste, parsley, remaining 1/4 teaspoon table salt, and pepper in a small bowl with an electric mixer until combined well. Beat in wine until combined well.
Divide half of garlic butter among snail shells. Stuff 1 snail into each shell and top snails with remaining butter. Spread kosher salt in a shallow baking dish and nestle shells, butter sides up, in salt.
Bake snails until butter is melted and sizzling, 4 to 6 minutes. Serve immediately.
