Every month, My helper used more than 5 liter cooking oil. Our food is not oily at all. Then last month after we bought a new bottle, I put a label of date on the oil bottle. One month later, we still got half bottle left! Magic!
My helper saved the empty cooking oil bottle before. I asked to put It into recycle bin but now I believe she stole the cooking oil and stored in the empty bottle, and send back to Philippine.
My helper had told me every month she would mail back a box to Philippine. I guess that the cooking sugar, cooking oil, soya sauce...... She mailed back are from my kitchen