Name: Steak Sandwich
Prep time: 10 min
Cook time: 60 min
Total time: 70 min
Yield: 4
Ingredients: 3/4 cup mayonnaise (, preferably whole egg); 1 large garlic clove (, minced); 3 large onions (, peeled and finely sliced (brown, white or yellow)); 40 g / 3 tbsp butter; 2 tbsp brown sugar; 1 tbsp balsamic vinegar; 1/4 tsp salt & pepper; 600 - 700 g / 1.2 - 1.4 lb grilling beef steak ((Note 3)); Salt and pepper; 1 tbsp vegetable oil; 2 tomatoes (, thickly sliced); 60 g / 2 oz rocket /arugula or other lettuce of choice; Mustard ((I use American)); Turkish bread (, about 60cm / 2 feet long (or 4 rolls / buns of choice))