Instructions
Press the "X" button to enter the menu. Click on "Village."
Enter Costalot's Store. Click on "Buy," then click on "Vegetable." Buy a pumpkin for 300 chocolate coins and drop it in your garden.
Press "X" and go to the village, then enter Bart's Exchange.
Buy a gold tinker ticket for 50 chocolate coins. Select the pumpkin to tinker it.
Wait for Bart to arrive and tinker the pumpkin into a jack-o'-lantern.
Pick up the jack-o'-lantern and place it in the path of a sour sherbat. When the sour sherbat eats the tinkered pumpkin, it becomes a tame sherbat.