Pour the maple syrup and vodka into the mason jar.
Securely close the lid and shake vigorously to thoroughly combine the ingredients.
Find a cool and dark location to store the jar.
Shake the jar vigorously every day.
After 2 weeks minimum, though 2 months is better, strain the mixture through a fine mesh strainer if there is sediment, or skip this step if there is not.
Transfer the extracted liquid into a clean bottle with a lid.