Just put another 20 kilos of flour, 10 kilos of sugar and 5 packs of baking powder into a steel spring sealed heavy plastic container. Absolute waterproof, bug-proof and you need to go thru 3 doors to get into the pantry so there are no mice, rat or bug problems and the window is double mosquito netted and stapled. Bottled five liters of red wine and will filter the other 4 liters tomorrow, don't have enough bottles any more...Bottoms up!