Fettuccine With Creamy Squash Sauce

• 1 butternut squash (peeled)
• 1 savory (dried)
• 1 fettuccine is especially -good
• 750 gr pasta (cooked)
• 475 ml soy milk
• 240 gr onions (diced)
• 100 gr celery thinly (sliced)
• 65 gr carrots (peeled)
• 45 ml olive oil
• 16 gr arrowroot