Gotcha Pork Roast (Food Wars! Shokugeki no Soma recreation recipe)

Name: Gotcha Pork Roast (Food Wars! Shokugeki no Soma recreation recipe)
Prep time: 1 h
Cook time: 40 min
Total time: 1 h 40 min
Cuisine: Asian, Japanese
Ingredients: 3 medium Russet potatoes peeled and cut in quarters; Water for boiling; 1 tsp salt; 1 pinch pepper; 1 garlic clove whole; 2 sprigs fresh rosemary; 50ml whole milk; 2 tbsp (approx 20g) unsalted butter (1 for potatoes, 1 for frying); 1 tsp chicken bouillon powder (I use Yuki Garasupu); 1/2 tbsp Worcestershire sauce; 1/2 onion finely diced; 1 eryngii mushroom finely diced; 3 cloves garlic finely diced; 1 tsp parmesan cheese powdered or finely grated; 1 pinch dry parsley; 6-8 rashers of streaky bacon (long pieces are best); 150ml red wine; 1 tbsp soy sauce; 1 tbsp mirin; 1 tsp sugar; 1 tbsp (approx 10g) unsalted butter