"Black Hamburg" is a type of grape that is often used for making wines. When it comes to antonyms for this term, one can think of words that are completely opposite in terms of color, taste, and texture. For example, the antonym of "black" could be "white," "bright," or "light." Meanwhile, the antonym of "Hamburg" (which refers to a place in Germany) could be a different location or region, such as "Paris" or "London." Some other possible antonyms for "Black Hamburg" could include "dry," "sweet," "rough," or "sour," depending on the context and the characteristics of the grape itself.