As an expert sommelier and brewer, I can confidently say that using bourbon instead of rum in a cake is a delicious and viable substitution. While rum and bourbon have distinct flavors, they both have rich and complex profiles that can enhance the taste of a cake.
One of the main differences between rum and bourbon is the base ingredient. Rum is made from sugarcane or molasses, while bourbon is made primarily from corn. This difference in base ingredients gives each spirit its unique flavor profile. Rum tends to have a sweeter and more tropical flavor, while bourbon has a rich and slightly smoky taste.
When substituting bourbon for rum in a cake recipe, it's important to consider the flavor impact it will have. Bourbon has a stronger and more intense flavor compared to rum, so a little goes a long way. You may want to reduce the amount of bourbon used in the recipe to avoid overpowering the other flavors in the cake.
In terms of the specific type of bourbon to use, I recommend choosing one with a smooth and mellow character. Look for bourbons that have notes of vanilla, caramel, and oak, as these flavors will complement the cake nicely. Personal favorites for baking include Woodford Reserve, Maker's Mark, and Buffalo Trace.
It's worth noting that the alcohol content in bourbon is higher than in rum, so keep that in mind if you're serving the cake to individuals who are sensitive to alcohol. The alcohol will evaporate during the baking process, but the flavor will remain.
If you're not comfortable using alcohol in your cake or prefer a non-alcoholic option, rum extract is an excellent substitute. Rum extract is a concentrated flavoring that captures the essence of rum without the alcohol content. It provides a similar taste to rum and can be used in equal quantities as a substitute in cake recipes.
To summarize, using bourbon instead of rum in a cake can add a unique and delicious twist to the flavor profile. Choose a smooth and mellow bourbon, and remember that a little goes a long way. Alternatively, rum extract is a great non-alcoholic substitute that will still provide the desired rum flavor. Experiment and have fun with your baking!