As water boils, in a small saucepan, combine peanut butter, coconut milk and, coconut aminos.
Stir over low heat until smooth and creamy. If needed, blend for an ultra-smooth texture. Once the sauce has reached the desired consistency, turn off the heat and add lime juice, sesame oil, and rice vinegar.
Taste and adjust (add more lime, aminos, or peanut butter as preferred). Set aside.