As a traditional food, twist represents happiness and auspiciousness. In festivals and celebrations, offering sacrifices to twist can add atmosphere. Twist is similar in shape to gold coins, so it is regarded as a mascot symbolizing wealth and good luck. Offering twist is to pray for good fortune and smooth career. The twisted shape of the twist also symbolizes reunion, harmony and happy family life.
Solemnly declare: the answer is for reference only, please don't be blindly superstitious.