How to incorporate alcohol (rum) into a cake recipe?
You can also try, rather than putting it in during the baking process, to pour the rum into a pan big enough to fit te cake or loaf and have it soak up the alcohol. Additionally, rum is a very strong flavour, and might overpower or conflict with the pumpkin, so be careful not to use too much or you might end up with pumpkin flavoured rum cake as opposed ot rum hinted pumpkin cake.