Hangar One California Cocktail Contest: LA - Thai Town Mule

2 oz Hangar One Kaffir Lime
4 muddle limes
1 stalk lemongrass
1 kaffir lime leaf
homemade ginger beer

In a collins glass, muddle 4 limes.
Add Ice. Add 2 oz Hangar one Kaffir Lime. Top w/ home-made ginger beer. Bruise a stalk of lemongrass. Garnish w/ lemongrass and kaffir lime leaf