Mysterious 'Eruptions' When Mixing Coca-Cola and Crown Royal

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Mixing Coca-Cola with Crown Royal in a plastic cup creates "eruptions," where small streams of liquid shoot up from the drink's surface. This phenomenon is attributed to the carbonation in Coca-Cola reacting with the alcohol in Crown Royal, potentially similar to the mentos-soda reaction caused by gum arabic. The specific interaction between the ingredients may lead to rapid gas release, resulting in these eruptions. This reaction is not commonly observed with other drink combinations, making it a unique occurrence. Understanding the science behind this could enhance the experience of mixing these beverages.
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I have noticed recently that when I pour coca-cola ( from a regular red can ) into a plastic cup then mix crown royal in it that this produces "eruptions", small streams of liquid shooting up from the surface of the drink. What is causing these? I have mixed drinks many times and never noticed this in any other combination
 
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This could be similar to the known mentos-soda reaction, where the gum arabic in the mentos react with the soda gas.
 

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