Using a blender, puree pear.
Drop in the lime zest once pureed.
Next, add in agave.
Then if adding ice (for a more 'slush-like' margarita) add it in here.
However, if you are doing an 'On the Rocks' margarita don't add ice in, add it to your glass!
Add in both the tequila and the Triple Sec.
Blend again.
Rim a margarita glass with salt or cinnamon, honey & sugar (your choice)
Add ice for On the Rocks (if you have no already added ice.)
Serve.
Enjoy!