I bought a bunch of biscuit packets (ginger nut, digestives, bourbon biscuits) and couldn't resist opening a pack or two to try them. Now I'm afraid they'll go stale if I just leave them half opened. I have Tupperware but not super airtight or high quality. Nor do I have any dedicated biscuit tins. Should I keep them in the packet or transfer them somewhere? Can I use a glass pickle jar?
What is the best way to keep biscuits fresh? Any tips on making a DIY tin?