The Halifax Donair

Name: The Halifax Donair
Ingredients: 3 lb (1.5 kg) lean ground beef; 1 cup (250 mL) fine bread crumbs; 1⁄4 cup (60 mL) water; 2 tbsp (30 mL) canola oil, plus extra for greasing and frying; 1 tbsp (15 mL) garlic powder; 1 tbsp (15 mL) onion powder; 1 tbsp (15 mL) pepper; 1 tbsp (15 mL) oregano; 2 tsp (10 mL) beef bouillon powder; 1 tsp (5 mL) cayenne pepper; 1 tsp (5 mL) salt; 6 pita rounds (7-in/18 cm diameter); 2 cups (500 mL) Classic Donair Sauce (recipe below); 2 tomatoes, diced; 1 small onion, diced; 1 can (12 oz/370 mL) full-fat evaporated milk; 3⁄4 cup (175 mL) granulated sugar; 1 tsp (5 mL) garlic powder; 1⁄3 cup (75 mL) white vinegar