What type of key is the most important at Thanksgiving dinner?

The most important key at Thanksgiving dinner is the "tur-key"! 🦃

Explanation: The riddle plays on the word "key" by using a pun. It implies that the most important key at Thanksgiving dinner is not a literal key, but the delicious turkey, which is the centerpiece of the meal. The use of the turkey emoji adds a playful touch to the answer.