Brown-Butter Old Fashioned Recipe

• 1 bottle bourbon (25 ounces; 750ml)
• 1 cup butter (8 ounces; 224g)
• 1/4 cup turbinado sugar (2 ounces; 60g)
• 24 to 36 dashes bitters

1. Pour bourbon into a freezer-safe, resealable plastic container. In a small saucepot over medium heat, melt butter and stir with a whisk until the solids brown, about 5 minutes. Immediately whisk butter into bourbon. Cover and freeze until butter rises to the top and solidifies, at least 1 hour and up to overnight.
2. Remove butter from bourbon and reserve for basting meat, cooking vegetables, or baking. Strain buttered bourbon through a fine-mesh strainer to remove any remaining droplets of butter.
3. Dissolve turbinado sugar in 1/2 cup hot water (4 ounces; 120ml). Combine bourbon with sugar syrup and bitters. For each cocktail, serve the pre-batched Old Fashioned mixture on the rocks in a tumbler, or stirred with ice and then strained into a cocktail glass.

bourbon, butter, turbinado sugar, bitters

Taken from www.seriouseats.com/recipes/2018/08/brown-butter-old-fashioned.html (may not work)