Set a wide, shallow dish on the stove with water and heat to medium-low, very gently boiling. While the water heats, prepare your jars by adding a sticker to the metal ring of the wick and press firmly into the middle of the bottom of your glass jar. Align the wick holder on the top of the jar to keep the wick from moving to one side.
Pour about 1/3 of the jar full of beeswax pellets, then add 1/2 tsp coconut oil. Repeat the layers, finishing with the beeswax to near the top of the jar. As you fill the jars, make sure that the wick remains in the center. The coconut oil is optional but helps to slow the burning of the beeswax so your candles will last longer.
Once the water is boiling gently, place your jars in and allow the wax and coconut oil to melt. Add more beeswax pellets as needed as the wax melts and naturally lowers.
Once the wax is melted, remove from the water bath and place on a baking rack to cool. Add essential oils if using, dropping them in all around in the wax. Allow the wax to cool and harden, then tie with twine and a sprig of rosemary for a lovely gift!