Sliced pork roast on a bun with mustard is not to be believed .
Germans know how do do it right ( do n't get me started on this stuff as it 's suppose to be about sweets ) .
Sliced pork roast on a bun with mustard is not to be believed and Germans know how do do it right ( do n't get me started on this stuff as it 's suppose to be about sweets ) .