Vegan Sausage Rolls

Name: Vegan Sausage Rolls
Prep time: 20 min
Cook time: 30 min
Total time: 50 min
Cuisine: British
Ingredients: 1/2 cup dried porcini mushrooms; 200 ml water; 2 cup mixed nuts (walnut, cashews ,brasil nuts and almonds); 1 1/2 cup breadcrumbs; 1 onion; 4 garlic cloves; 250 g chestnut mushrooms; Few springs of rosemary; 2 tablespoon soy sauce; 1 teaspoon yeast extract (you can substitute for miso paste); Salt and pepper; 1 sheet vegan puff pastry; 3 tablespoon plant-based milk; 1 teaspoon maple syrup