Your effort to fix a delicious lunch goes to waste if the perishable food loses its freshness before being eaten. So, we have found two easy hacks. On her TikTok channel, food scientist Jessica Gavin has shown several useful hacks – how to make small bags from a big zip-lock, a couple of simple tests to pick the sweetest watermelon, and the proper way to store cookies to keep them fresh and chewy for long. One way to keep your lunch cool for long Summer weather demands special packing for perishable food, which Jessica demonstrates using basic items already present in your kitchen. It’s a bonu…