spaghetti noodles - 200g (200g)
onion - 1/2 (1/2, thinly sliced)
bell pepper - 1/2 (1/2, thinly sliced)
sausage - 100g (100g, diagonally sliced)
olive oil - 1 tablespoon (1 tablespoon)
salt - 1 tablespoon (1 tablespoon)
black pepper - watch the video to see (to taste)
Parmesan cheese - watch the video to see (optional, for topping)
parsley - watch the video to see (optional, for garnish)
soy sauce - 1 tablespoon (1 tablespoon)
milk - 1/2 cup (1/2 cup)
ketchup - 150g (150g)
sugar - 1 teaspoon (1 teaspoon)