In a bowl combine the garlic, the Dijon-style mustard,
the dry mustard, and salt and pepper to taste
and add the oil, drop by drop, stirring.
Put the tomatoes in a buttered gratin dish,
sprinkle them with salt and pepper
and spread them with the mustard mixture.
Broil the tomatoes under a preheated broiler
about 3" from the heat for 1 minute,
or until the tops are bubbly and golden.
Serves 4.