The amount of each ingredient you need will depend on the size of your container and how strongly flavored you want your vodka to be—keep this in mind as you decide how much of each ingredient to use. Wash lemons and slice thinly. Insert in bottle. Wash mint leaves and add to bottle. Fill container with vodka, seal it, and store out of direct sunlight.
Because lemon and mint have strong flavors, they should take only three to four days to infuse. Taste daily until drink reaches preferred intensity. Using a coffee filter or cheesecloth, strain out the fruit and herbs as you pour vodka into a different container. Wash out bottle and pour infused vodka back in. If you’re giving as a gift and want to leave the fruit and herbs in for decorative purposes, simply include a card with instructions for removing.