When I was a kid we would sometimes have tinned pears for dessert, which I loved. One time I saw the empty tin next to the sink. When I looked inside, it was about 1/3 full of syrup, so I slurped it down.
Except it wasn’t syrup, it was the grease my mother would save from the frying pan, still liquid and (fortunately) not hot, but a nasty experience I’ll never forget.
That reminds me of one of Jasper Carrots jokes - something about what he finds in a bottle, iirc on a bus…'nuff said…whoaaa!
Sauce or in these parts…source first - most important perhaps!