For a more intense nutty flavor and crisp texture, lightly toast the pecans first for six to eight minutes. Specific recipes may require soaking overnight, or at least eight hours.
The flavor intensifies the longer the nuts rest in the bourbon. There’s also such a thing as pecan-infused bourbon, sometimes known as simply pecan bourbon.
Instead of letting bourbon coat and transform the taste of pecans, this approach lets the flavor of pecans infuse the bottle. This also takes much longer than 30 minutes.