Javanese Peanut Pasta

• 4 scallions
• 1 garlic clove
• 450 gr egg fettucine
• 230 gr chunky peanut butter
• 240 ml chicken broth
• 100 gr peanuts (chopped toasted)
• 45 ml soy sauce
• 60 ml rice wine vinegar
• 28 gr dark brown sugar
• 20 gr coconut (shredded)