The museum is situated in the nougat factory it self and if you are lucky enough (I wasn't) your visit will be at the same time when there is a factory tour that includes "do-it-yourself" activities. I only got to see the nougat museum and the shop that is attached to it.
Production of nougat started in 1956, after it was introduced from Hong-Kong by Ms Chiu Peng Yu-Ho. In the museum, which is very small and free of charge, you can see a nougat production line that is from way back in time.
You can also see the world's biggest piece of nougat (according to Lonely Planet) and it is all covered in gold. The staff didn't speak English so I never found out if it really was nougat or just a big piece of plastic.