The Chef Toke is performed to salute work of great quality and skill. It is done by making the "OK" sign (tips of the thumb and forefinger touching while the other three fingers are extended) and then kissing the point where the thumb and forefinger meet. The Chef Toke action is often accompanied by an exaggerated "Mmmwah!" kissing sound.
In an email or text, the words "Chef Toke" can be substituted for the action.
Your come-back to that insult was perfect. Chef Toke.