I finally got it. I just kept doing the same thing over and over and it finally worked. Go figure. Now I have another problem....the game won't let me combine the wood planks, nails, and hammer so I can repair the ladder. The hints tell me to do that, and I combined the hammer and nails, but it won't let me add the wood. I also posted on the BFG site in case it's a bug in the game. Others have finished the game, though.
The four food groups: Chocolate, chocolate, chocolate and HOT chocolate.