Where does “brown cheese” come from?

brown cheese (English) comes from Norwegian brunost, from Norwegian Bokmål brun, from Old Norse brúnn, from Proto-Germanic brūnaz, from Proto-Indo-European bʰerH- — to pierce; to strike; brown.

brown cheese (English): Norwegian whey cheese, characterised by its brown...

Definitions

Norwegian whey cheese, characterised by its brown...

Ancestry of “brown cheese”, step by step

Step	Language	Word	Meaning
1	Norwegian	brunost	brown cheese
2	Norwegian Bokmål	brun	brown
3	Old Norse	brúnn	brown; bright; a black horse
4	Proto-Germanic	brūnaz	brown
5	Proto-Indo-European	bʰerH-	to pierce; to strike; brown

Every word from Proto-Indo-European bʰerH- →Every word from Proto-Germanic brūnaz →Every word from Old Norse brúnn →