Spicy Peanut Noodles with Crispy Tofu

Name: Spicy Peanut Noodles with Crispy Tofu
Ingredients: 2 tbsp vegetable oil; 220 g extra firm tofu (drained and sliced into 1cm thick triangles); 1 inch piece of ginger; 2 cloves of garlic (peeled and minced or finely sliced); 60 ml soy sauce; 60 ml water; 2 tbsp dark brown sugar; 2 tbsp Chinese black vinegar (aka chinkiang vinegar); 1 red chilli (finely sliced); 2 tsp cornstarch; 3 tbsp chunky peanut butter (use a good quality peanut butter); 400 g udon noodles (or 200g any dried wheat noodles); 1/4 cucumber (finely sliced); small bunch of coriander