lemons, washed well
ml vodka (unflavored!)
Heat the Anova Precision Cooker to 135ºF/57ºC. Use a peeler or a grater, such as the Microplane®, to remove lemon peel, being careful not to get any of the white pith from the peel. Pour 750ml vodka into a zip-close plastic bag. Add the lemon peel to the vodka and seal the bag, creating a vacuum using the water displacement method. Place bag into cooking water and cook 2 to 3 hours. While vodka infuses with lemon peel, place sugar and water into saucepan. Bring to boil, remove from heat and stir until sugar is dissolved. Let cool. When cooking time is up, remove bag from cooker and strain through mesh sieve to remove lemon peel. Stir simple syrup (sugar/water mixture) into vodka. Pour into clean, sterile, decorative bottles to give as gifts or return to original vodka bottle, cap off and keep cold in freezer.