In the original bottle or in a decorative bottle of your choice, combine the chilies with the vodka. Cap tightly and leave to infuse for 7 to 10 days in a dark place. Replace the original cap with a narrow liquor spout with a screen (available from bar suppliers). Use the infused vodka to make martinis or other cocktails, being aware that with every day the chili flavor will get stronger. If you plan to keep the vodka for more than 10 days more, it is advisable to strain out the chilies.