One printable page for a kitchen that tracks waste on paper: 10 blank lines under the heading "Daily Food Waste Log", with blanks for location, date and shift. No sign-up — print it, or save it as a PDF from your browser's print dialog.
The amount column is a row of empty tally boxes — one tick per handful or pan. The reason column is 4 ticks: Prep trim, Spoiled, Overproduction, Plate waste.
Print one sheet per shift and put it where the waste actually happens, with a pen on a string.
Time, what it was, a tick per handful or pan, why it went, initials. It takes a few seconds and it beats remembering at close.
Stack the sheets on Sunday, add up the repeat offenders, and change one thing about how much of it you prep.
End of shift: circle the biggest line above — that's tomorrow's prep conversation.
Counting by hand gets old. Waste Tally logs it in seconds.