This is a question with answer options. Goal: Make Keto buttercream

Which of the following methods is more reasonable for accomplishing this goal?

Options:
(a). 8 oz. unsalted butter, at room temperature 2 tsp vanilla extract 1 tsp ground cinnamon 1 - 2 tsp erythritol (optional) Brown of the butter in a small sauce pan until it turns amber in color, but without burning it. Pour the browned butter in a glass of milk and whisk in the rest of the butter bit by bit with a hand mixer until fluffy. Add cinnamon and optional sweetener towards the end.;
(b). 8 oz. unsalted butter, at room temperature 2 tsp vanilla extract 1 tsp ground cinnamon 1 - 2 tsp erythritol (optional) Brown of the butter in a small sauce pan until it turns amber in color, but without burning it. Pour the browned butter in a beaker and whisk in the rest of the butter bit by bit with a hand mixer until fluffy. Add cinnamon and optional sweetener towards the end.;...I think the answer is
(b).