Step 1

Wash the quince and remove the exterior fuzz with a soft cloth.  Be sure the quince are bright yellow, not green, as green quince don't have as much flavor.

Step 2

Grate the quince into a quart jar.  Top with sugar, rose petals and a cinnamon stick.

Step 3

Fill the jar with vodka to within an inch of the top.

Step 4

Give the jar a shake and allow the flavors to infuse for 2-3 months.  Set the jar in a cool dark place, and give it a shake anytime you think about it.  It'll be tasty after a week, but give it more time to fully mature.