Japanese Ketchup Spaghetti (Napolitan Spaghetti) – AYANA GOHAN

Ingredients

• 160 g spaghetti
• 100 g onion
• 50 g sliced bacon (Vienna sausage or ham is ok)
• 2 mushroom
• 2 green peppers
• 1 pinch Japanese beet sugar
• 3000 g water
• 36 g salt (for boiling)
• 2 tbsp olive oil (for pan-fry)
• 3 tbsp pasta water
• coarsely ground black pepper (for topping)
• parmesan cheese (for topping)
• 6 tbsp ketchup
• 5 g butter