Although it's some time ago I played this one, I still remember. Because you're telling that "The guy says "Sacraboor" I think I know what you're doing. These are the three possible missings:
1.Did you sit on the stool and order a flaming scuttlefish? Time it so it's below the painting, and jam the sushi boat propulsion mechanism with the paintbrush. When the chef runs out, go to the
kitchen and pour the grog into the steam generator. That should get you the painting.
2. If you did ste the painting on fire, there are two possible things. One is that you entered the kitchen too soon, that is while the chef is still inside. The other is that you wait too long with entering the kitchen with as result that the chef is coming back before you did this ehhhh... noble trick with the grog. And the last possibility is that you aren't quick enough with using your grog.