Preheat a gas grill (or alternately an oven to 350 degrees F).
With a small, sharp knife, cut small slits into each eggplant.
Strip the leaves from the thyme sprigs, and chop. Discard the stems. Insert a sliver of garlic and a bit of chopped thyme into each slit in the eggplant. Rub olive oil onto the eggplants. Grill until black on a grill, turning frequently to ensure even roasting, about 15 minutes, or roast on an oiled baking sheet in the preheated oven, about 1 hour.
Remove from the heat. Slice eggplant lengthwise and when cool enough to handle, scoop the softened pulp into a bowl. Beat until creamy with olive oil, and sprinkle with salt, pepper, and Essence to taste, and a squeeze of lemon juice. Serve with lemon wedges and toasted pita triangles at the table.
Yield: About 2 cups