Green’s Dictionary of Slang

(US) Hungarian.

1911		S. Ford Torchy 173: Who couldn’t keep step to a tune like ‘Yip-I-Addy’ played by a twelve-piece goulash orchestra.
1920		Ade Hand-made Fables 322: A hairy Musician with a goulash Moniker.
1970		‘Troy Conway’ Cunning Linguist (1973) 64: [T]he road beckoned ahead of me. A long white ribbon leading out of Goulash Land, where a lot of brave Hungarians had quit.