Remove from heat, and immediately fit a whisk attachment to your stand mixer. Turn the mixer on medium-low speech, while simultaneously and steadily pouring in the syrup mixture. Make sure you cover all of the gelatin with it, so it can melt. After the syrup has been incorporated, turn the mixer up to high and continue beating until the mixture has more than doubled in volume and the marshmallow is slightly cool to the touch. This will take anywhere between 6-8 minutes. If you are using a hand mixer to do this, the process will take slightly longer. To ensure the marshmallow is done, turn off the mixer and lift up the whisk. What should happen is the marshmallow cream should slowly fall off the whisk attachment, a lot like lava. Next, beat in the vanilla and peppermint extracts until combined.