Answer: Dunks it in tea
At the tea party, the March Hare wants to know the time. The White Rabbit then appears with his pocket watch, exclaiming that he is late. The Mad Hatter yanks the watch from him, saying "Why, no wonder you're late! This watch is exactly two days slow!" He then dunks it in tea, opens the back of the watch, pours salt in it, uses a fork to take out the wheels and springs, spreads butter on it, and pours tea into the watch. He then puts two spoons into the watch, followed by jam, but when the March Hare suggests that he put mustard into it, he proclaims that it would be silly, and squeezes lemon juice into it instead.