Peel the yellow skin from the lemons in strips without the pith (white part of lemon). Add to grain alcohol (everclear) and let infuse for 1 week out of the sunlight. Then strain thru cheesecloth. Make simple syrup and add all together in bottle.
Use a 750 ml bottle of vodka (Absolut). Using 2 vanilla beans, add them to the bottle and let infuse for 2 weeks. Strain just in case there are any beans that got loose.