Gyros

Name: Gyros
Ingredients: 2 teaspoons pepper; 2 teaspoons ground cumin; 1/4 cup water; 3 tablespoons chopped parsley; 1 tablespoon red wine vinegar; 1 large onion, sliced into thin rings; 1/2 teaspoon dijon mustard; 4 large cloves garlic, minced; 2 teaspoons oregano; 1 large tomato, coarsely chopped; 8 individual pita breads; 3 tablespoons olive oil; 1 clove garlic, minced; 1 teaspoon ground fenugreek; 1 cup plain yogurt; 1 medium onion, finely chopped; 3 teaspoons salt