Preheat oven to 350°F Line cookie sheets with parchment paper
In a large bowl, using a beater, cream butter and sugars together until smooth and creamy
Add eggs and vanilla. Beat on low speed until combined.
In a separate bowl, whisk together flour, cocoa powder, baking powder, baking soda and salt.
Add half the flour mixture to butter and sugars, mixing on low speed
Pour in the lager, continuing to mix on low
Add remaining flour mixture and mix until the batter is just conmbined
Fold in the chocolate chips
Using a cookie scoop or tablespoon, drop cookie dough onto prepared cookie sheets 2 inches apart
Bake in preheated oven for 12 - 15 minutes. Cookies will still look slightly wet in centre
Cool on a rack
Store in an air-tight container once cooled completely.
