Thats what makes the magic of spicy thai peanut sauce the pairing of deliciously creamy and exotic coconut milk with nutty and earthy peanut butter. Red curry paste and brown sugar add a delicious thai-spiced sweetness. And then theres the touch of cayenne pepper to add a simmer underneath it all. Its not an overwhelming heat just enough to complement all the other flavors going on here (but add more if you want to kick it up a notch).