Keep Onions And Garlic For More Than A Month Or So. Easy way to prevent onions and garlic from moulding is their proper storage. Simply puncture paper bags and store them inside and clip the opening. Voila, they will not get moulded any time soon. 1 2 3 4 5 6 7 8 Facebook Twitter Google+ Linkedin Pinterest Article Tags: Featured · Kitchen Hacks · Life hacks · Simple hacks Article Categories: Specials