Reduce beer down until you have about 1/3 cup left. This will take some time. Be sure not to boil, but simmer. Remove from heat stir in the 3 TB of sugar until dissolved and set aside.
Preheat oven to 375 °. Line baking sheet with parchment paper.
In a bowl, whisk together the flour, baking soda, and sea salt. Set aside.
In another bowl, mix together the butter and sugar until creamy. Add vanilla and beat until thoroughly combined. Beat in the eggs one at a time, Slowly add the flour mixture. Alternate the flour mixture and the reduced beer until fully incorporated.
Stir in the chocolate chips. Use a spoon to drop balls of dough onto the baking sheet. Bake for 8-10 min, until set and golden.