Sülze Brötchen
Head cheese/aspic on roll; sliced Sülze (meat in aspic, typically pork).
Blutwurst, Sülze & Presskopf
Rotwurst Brötchen
'Red sausage' on roll; regional blood sausage term.
Presskopf Brötchen
Pressed head cheese on roll.
Kölscher Kaviar
'Cologne caviar'; Blutwurst (blood sausage) on rye bread with onion rings. Not actual caviar.
Himmel un Ääd
'Heaven and Earth'; mashed potatoes and apple sauce with Blutwurst—sometimes adapted to sandwich.
Blutwurst Brötchen
Blood sausage on roll; sliced Blutwurst (blood sausage with pork blood, fat, barley or bread). Regional variations.