If you’re into Freezer Bag Cooking, then you should consider bringing along a freezer bag cozy to keep your food warm while it re-hydrates. This it particularly helpful in the early spring, autumn, and in the wintertime when colder weather will quickly cool hot water in an uninsulated Ziploc bag.
This is an easy DIY project. To get started you need a roll of Foil Bubble Insulation and a roll of Reflective Foil tape. The bubble insulation consists of a layer of polyethylene bubble wrap sandwiched between two sheets of aluminum. This stuff is easy to find at Home Deport or a well stocked Ace Hardware store.
The first step is to cut two pieces of the foil bubble insulation with the same width. The stuff is very soft so common household scissors are fine for this task. Next cut one of the pieces down about 4 inches. You want the foil bubble insulation piece to be slightly wider than the freezer bag since you’re going to tape them together to form a pocket-like envelope. I usually allow for two foil columns on the left and the right of the Ziploc and use that as a guide.
Next, stack the shorter piece of insulation on top of the longer piece, and cut three lengths of reflective tape tp join the sides and bottom together.
Apply the reflective tape to form an insulating envelope and cut off any excess around the edges. Fold the longer piece over the shorter piece and you’re done. If you want to be extra fancy, you can also add some velcro tape to the inside of the flap and the outside of the insulated envelope to keep the cozy closed while your freezer bag meal is cooking.
The weight of the freezer bag cozy shown here is 1.7 oz.
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