The phrase appears to be a specific reference to a user profile or activity feed on the crafting community site Cottage DIY .
: A specific video file (mp4) or tutorial video shared by this user within the soap-making forums. Sweet_sophia 16mp4
Specifically, is a member of that community, and her activity feed often highlights tutorials and discussions regarding artisanal soap making, such as "Toasted Coconut Goat Milk Bar Soap". The phrase appears to be a specific reference