Traditional English Cottage Pie

Name: Traditional English Cottage Pie
Prep time: 15 min
Cook time: 45 min
Total time: 1 h
Cuisine: European, British
Ingredients: 400 ml beef stock (can use 1 stock cube dissolved in 400mls hot water); 50 g butter; 2 onions, peeled and finely chopped; 2 carrots, peeled and finely diced; 2 celery, trimmed and finely diced; 3 garlic cloves; 1 sprig fresh thyme; 1 bay leaf; 1 kg minced beef (ground beef); 2 tablespoons tomato puree; 2 tablespoons Worcestershire sauce; 4 drops Tabasco sauce; 175 ml red wine; 1 kg white potato; 75 g butter; 1 splash milk; parmesan cheese, for grating