Make sure your 100% cotton fabric has been washed and dried. Cut the fabric into the desired size square, rectangle, or circle you want to use.
Now that your fabric is ready, in a glass bowl you want to melt the beeswax and jojoba oil together. I used a small kitchen scale and measured it out.
Melt your ingredients together in a glass bowl using either a double boiler, microwave on 50% heat in 30 second intervals stirring until melted, or on a mug warmer.
Have your sheet pan covered with parchment paper and ready to go. Take one piece of cotton and fold it in half and half again so it is a smaller rectangle. Carefully dip it into the hot wax mix allowing it to sit for a few seconds to soak up the wax. Slowly, lift it out using a wooden spoon, fork, or whatever you have on hand. Allow the extra wax to drip back into the bowl.
Carefully unfold your cloth and lay it flat on your parchment covered baking sheet. Gently sprinkle some pine rosin powder as evenly as possible over the surface of your fabric. You don't need a lot, but the ideas is to dust the top as evenly as possible.
Preheat your oven to about 250 degrees F, and place the baking sheet with fabric inside. The heat will melt the wax mixture and pine rosin right into the fabric. Watch it carefully it only takes a few minutes.
When you remove it from the oven observe your wrap. If it needs more wax, give it another dip in your bowl continuing the process above, and place it back in the oven for 2 minutes until melted evenly.
Once it is coated thoroughly, hang it on the back of a chair or on a hanger to cool. That should only take a few minutes.
What you are left with is a wax covered cloth that has just enough tackiness to be used in place of plastic wrap over bowls and containers in your kitchen. Also, when you fold the wrap it is stiff enough to stand on its own. That is one test to know you have enough wax on your fabric.
Store these in a cool dry place in your kitchen. After use, rinse with cold water to wash and lay flat to dry. Don't use hot water because it will melt the wax. If you feel like your wraps are loosing their tackiness you can retreat them with a little more wax and rosin in the oven the same way you made them.