PES

*šif - clumps of fat, butter (EDG 573)

Could be related to Proto-MSA *ŝVḫāp- ‘milk’.

Amharic
šəffəta - clumps of butter (EDG 573)
Endegen
šīf - clumps of butter coming out of the holes in the pot when the milk is being churned (EDG 573)