In another mixing bowl, beat the softened butter together with the granulated sugar and eggs, until combined. Then, add the flour mixture, the buttermilk, lime zest, lime juice, Tequila and vanilla bean paste. Fold until just combined.
4 oz butter, 7.05 oz granulated sugar, 2 eggs, 2 lime zest, 1.76 oz lime juice, 1 tbsp Tequila, 4.23 oz Buttermilk, 1 tsp vanilla bean paste