When you fulfill Mrs. Puff in Jellyfish Fields, she informs you that a golden spatula is at the bottom of Jellyfish Lake. You can find Mrs. Puff soon after leaving Jellyfish Caves. There will be plenty of robotics obstructing your path, so you need to take them out along theway To drain the lake, you will need Patrick to complete it. There is a bus station in front of Mrs. Puff you can use to swap characters.
When you have Patrick, continue to the middle island throughout the bridge, and there will be 3 robotics with large hammers waiting for you that you need tofight Take our 2 of them, and after that perform a stomach flop next to the last one to stun it. Next, pick up the downed robotic and point it at one of the brown pumps sitting in the water. A reticle will show up hovering of the pump, and you can toss the robotic to destroy it. You will need to do this up until all of the pumps are gone from the water. There are 5 pumps for you to destroy.
After the final pump is gone, the lake will partly drain, and a golden spatula will be available for you on a small platform. Jump over to it, and after that return to Mrs. Puff on the other side of the island to tell her you ended up the job. She won’ t give you anything for your problems, however at least you got a golden spatula for your hard work.