Where does “Maurermarmelade” come from?

Maurermarmelade (German) comes from German Maurer, from Latin maurus, from French maure, from Middle French moré, from Old French More, from Latin Maurus, from Ancient Greek Μαυρούσιος, from Ancient Greek -ούσιος — Creates adjectives from noun or verb stems.

Maurermarmelade (German): minced meat, traditionally eaten on bread rolls (Mettbrötchen) as part of the communal breakfast by construction workers or others having to perform physical labour as part of their job

Definitions

minced meat, traditionally eaten on bread rolls (Mettbrötchen) as part of the communal breakfast by construction workers or others having to perform physical labour as part of their job

Ancestry of “Maurermarmelade”, step by step

Maurermarmelade traces back through two separate lines of ancestry.

via German Maurer

Step	Language	Word	Meaning
1	German	Maurer	mason; An inhabitant of Mauren
2	Latin	maurus	Moorish, North African
3	French	maure	Moorish
4	Middle French	moré	Moor (person of Berber descent)
5	Old French	More	—
6	Latin	Maurus	Of or pertaining to the Moors; Moorish,...
7	Ancient Greek	Μαυρούσιος	an inhabitant of Mauretania; a Mauretanian
8	Ancient Greek	-ούσιος	forms relational adjectives: of or pertaining to
9	Ancient Greek	-ῐος	belonging to; of”, “belonging to”, “pertaining to
10	Proto-Indo-European	-yós	Creates adjectives from noun or verb stems

via German Marmelade

Step	Language	Word	Meaning
1	German	Marmelade	jam; marmalade
2	Middle French	marmelade	—
3	Portuguese	marmelada	quince jam, quince cheese
4	Galician	marmelo	quince
5	Old Portuguese	marmelo	—
6	Latin	melimelum	honey apple, sweet apple
7	Ancient Greek	μελίμηλον	geniting, a variety of apple
8	Ancient Greek	μῆλον	apple; any fruit from a tree; a woman's breast
9	Proto-Indo-European	(s)meh₁l-	small animal”; small animal

Every word from Proto-Indo-European -yós →Every word from Ancient Greek -ῐος →Every word from Ancient Greek -ούσιος →