Slice half an onion and microwave for 5 minutes to remove moisture, then heat olive oil in a frying pan and sauté the onions and chopped carrots over medium-low heat.
Once the onions have softened completely, add pork loin and mushrooms, sprinkle with black pepper, sauté, then add 250ml water.
Add curry roux, 1 tablespoon chicken stock, 1 tablespoon allulose, 1 tablespoon tomato ketchup, and sprinkle with more black pepper.
When it comes to a boil, add soy milk udon noodles and cook for another 2 minutes.